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International Refereed Journal of Engineering and Science (IRJES)
ISSN (Online) 2319-183X, (Print) 2319-1821
Volume 2, Issue 5 (May 2013), PP.46-54
www.irjes.com
www.irjes.com 46 | Page
Characteristics of Pedestrian Accidents on Trunk Roads in
Ghana
Daniel Atuah Obeng
Department of Civil Engineering, Kwame Nkrumah University of Science and Technology, Ghana
ABSTRACT: Annually, pedestrian accidents account for over forty percent (40%) of all road traffic accidents
whilst trunk roads record two-thirds of all road traffic fatalities. Whilst the unpredictability nature of accidents
is well documented, diagnostic tools require to establish causality and to inform intervention strategies have
been many but with varied successes. Over the years, accident statistics have shown no discernible pattern in
improvement levels even with so much efforts and pedestrians continue to bear the brunt of the inefficiencies on
the trunk road environment. This study employed descriptive analysis to identify potential pedestrian accident
causal factors from key attributes of the road transport system. A 5-year accident data, i.e. from 2006 to 2010,
on a trunk road length totalling 13,263km, was processed using the Microcomputer Accident Analysis Package
(MAAP) 5 software. The analysis of the national and regional data sets resulted in a variety of distinct risk
factors obtained for different regions in the study area. This rudimentary method of accident investigation
identified the unique characteristics of potential and possible risk factors of pedestrian accidents in different
socio-economic environments. It has also reinforced the need for proper accident problem contextualization and
data representation using more sophisticated methods for accident investigation.
Keywords – Characteristics, Descriptive Analysis, Ghana, Pedestrian Accident, Trunk Road.
I. INTRODUCTION AND APPROACH TO THE STUDY
In developing countries, pedestrians represent the most dominant users of road space but there is a huge
deficit in the provision of pedestrian infrastructure. This often results in pedestrian accidents as it is established
that annually pedestrian accidents accounted for over forty percent (40%) of the distribution of road traffic
accidents by road user type (Afukaar, 2001 [1]). Trunk roads (highways) account for two-thirds of all road
traffic fatalities with pedestrians representing about forty percent (40%) of the accident victims (BRRI, 2010
[2]).
Over the years, several approaches and methods have been used to assess road traffic safety; from
single accident rate to accident prediction models that relate the expected accident frequency at a road location
to its traffic and geometric characteristics, users of the road as well as its operating system (G-Basyonny and
Sayed, 2006 [3]). The unpredictability nature of pedestrian accidents however requires a more thorough and
systematic diagnosis of the accident problem in order to inform appropriate intervention strategies. Using
rudimentary analytical tools, key attributes of the road transport system are assessed and their relationships with
pedestrian accident incidence established. This preliminary investigation therefore offered the opportunity to
identify potential and possible causal factors from the attributes of the „pedestrian‟ accident victim, the vehicle,
road alignment elements and type of land use within the accident‟s environment.
In Ghana, the Transport and Research Laboratory (TRL) Microcomputer Accident Analysis Package
(MAAP) 5 software has been the main tool for accident analysis and reporting. Though quite elementary, it
presents accident and casualty data including details of the vehicle involved, climatic conditions and the road
environment. A 5-year pedestrian accident data, i.e. from 2006 to 2010, on the trunk roads were processed
employing the MAAP 5 software.
From the synthesized data, descriptive analysis techniques were used to identify potential pedestrian
accident causal factors (Analysis, Ch. 3 [4]). A general description of pedestrian accidents was presented at the
national and regional levels to show the distinct differences in risk factors. From these perspectives, safety
practitioners are well informed on the uniqueness of the problem and the appropriateness of methods employed
in accident investigation.
II. SCOPE OF STUDY
Since 2001, the Ghana Highway Authority (GHA) has been improving and maintaining a total trunk
road network of 13,263 km. In terms of function, the network has been categorized into three groupings,
namely: national (roads linking regional capitals to national capital), inter-regional (roads linking regional
capitals) and regional (roads linking district capitals to regional capitals) roads (MRH, 2005 [5]).
Characteristics of Pedestrian Accidents on Trunk Roads in Ghana
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The Ghana Highway Authority uses a Pavement Management and Maintenance Programme (PMMP)
as its Pavement Management System (PMS) tool to effectively allocate resources to address the management
and maintenance requirements of the trunk road network (GHA, 2010 [6]). From its portfolio of paved and
gravel roads, condition scores computed for homogeneous sections are reported. It was indicated that the overall
condition mix of the trunk road network had dropped substantially compared to trends in recent past. The
reasons assigned to the drop were attributed to very little or no routine maintenance interventions in the previous
year, among others. Table 1.1 presents the overall condition mix of the trunk road network as at the end of 2010.
Table 1.1 – Road surface condition mix
Condition Description Length (km) Percentage (%)
Good 3,865 29
Fair 5,841 44
Poor 3,56 27
Total 13,263 100
Source: Road Condition Report, 2010, GHA, MRH
Geographically, the study domain covered pedestrian accident data recorded on all trunk roads in the
ten (10) regions of Ghana. Fig. 1.1 shows the map of the trunk road network and the different trunk road types.
Fig. 1.1 – Trunk road network
III. DATA PROCESSING AND ANALYSIS
Information on road traffic accidents is available at the National Road Traffic Accident database at the
Building and Road Research Institute (BRRI) in Kumasi, Ghana. The database is compiled from police files
using a standard accident report form. This form includes information about the accident location, the vehicle(s)
involved and casualty details. In general, a police report contains additional information from casualties,
witnesses, and report by a vehicle examiner from the Driver and Vehicle Licensing Authority (DVLA), a plan of
the accident indicating the location and a general report by the investigator summarizing the facts surrounding
the accident. The accident information is then coded and stored in computers at the BRRI and analyzed with the
help of the MAAP software. The software has capacity to analyze accidents at specific locations, using stick
diagrams to display key accident features in the form of a column (or stick) of data. The investigator then
chooses from a number of different sticks and can sort the variables into any specified order. It also provides a
priority listing of the worst accident sites in a city or area. Accident reference numbers can be quickly obtained
and individual records displayed or printed.
Characteristics of Pedestrian Accidents on Trunk Roads in Ghana
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For this study, relevant information for each accident was retrieved and analyzed using the kilometer
analysis facility and cross-tabulations available in the MAAP software. Accident and casualty data obtained
included characteristics of victim (age and sex), type of vehicle involved and its movement, month, day and
hour of accident, accident and casualty severity, visibility, direction and accident location type.
IV. DATA PRESENTATION AND DISCUSSION
The processed pedestrian accident data and the results of the synthesized data were presented as
accident severity by location type, casualty severity by age group, casualty by gender, accident by vehicle type,
and accident by time of day. The distributions and summaries provided a general description at the national
level (Wikipedia [7]). In providing additional perspective to the character of pedestrian accidents on trunk roads,
regional differences were discussed based on the extent of dispersion of computed regional values from the
national average for different established pedestrian accident attributes.
4.1 General Characteristics of Pedestrian Accidents
4.1.1 Accident Severity by Location Type
Table 4.1 illustrates the national distribution of accident severity and also presents accident severity as
recorded in the non-urban environment. In all, a total of 15,710 pedestrian accidents were recorded, out of
which, 10,626 represented fatal and serious injury accidents (67.6%) and 5,084 accounted for minor accidents
(32.4%) (National Road Safety Commission, 2011 [8]). From the statistics on road deaths and serious injuries, it
is evident that the outcome of a pedestrian accident is most usually very severe.
Table 4.1 – Distribution of Accident Severity by Location
Accident Severity
National Non-Urban Environment
Number Percentage (%) Number Percentage (%)
Accidents
Fatal 4,088 26.0 2,233 39.8
Hospitalized 6,538 41.6 2,361 42.1
Injured Not-Hospitalized 5,084 32.4 1,014 18.1
Total 15,710 100.0 5,608 100.0
Source: National Pedestrian Accident Data, 2006 – 2010, BRRI
In the non-urban environment, out of a total of 5,608 accidents, 4,594 were fatal and injury accidents
representing 82% of the total pedestrian accidents recorded in that setting. The proportion of deaths and serious
injuries in rural settlements along trunk roads was substantial as four out of every five persons involved in
pedestrian accidents was either killed or had some form of serious disability.
4.1.2 Casualty Severity by Age Group
The distribution of casualties by the different age groups is illustrated in Fig. 4.1. It indicates the
number of persons killed or seriously injured as against minor injuries for the various age groups. From Fig. 1.1,
persons aged between 14 and 45 years were most at risk as the group alone accounted for 48% of pedestrian
deaths and persons with serious disability. Children below the age of 15 years represented the next sizeable
number of persons at risk representing 32% of persons with serious injuries. Those above 65 years were the least
vulnerable in terms of age grouping but one in two persons of that age group risk dying when involved in an
accident. It was also quite revealing that persons between the ages of 44 and 65, supposed to be actively
working, only accounted for 13% of the total casualties recorded. This economically active age group is
presumed to represent a sizeable proportion of the pedestrian volume that uses the road space and will therefore
be susceptible to road traffic accidents.
Characteristics of Pedestrian Accidents on Trunk Roads in Ghana
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A Traffic Safety Fact Sheet publication from the US Department of Transportation showed that persons
between the ages of 15 and 45 years were most at risk of death (41%) followed by persons between the ages of
45 and 65 years (34%). Persons above 65 years accounted for 19% of pedestrian deaths and children below the
age of 15 years represented only 7% of pedestrians killed (Traffic Safety Facts 2009 [9]).
It is instructive to note that while persons between the ages of 15 and 45 years share commonality
either in Ghana or in the United States of America (USA) regarding the proportion of pedestrians most at risk,
the other age groups show reasonable degree of variance in the distribution of pedestrians most at risk. For
instance, children below 15 years in Ghana represented a sizeable proportion of persons with serious disability
as a result of pedestrian accidents (32%) but the same age group in the USA recorded only 7% of pedestrian
deaths. This development suggests a serious defect with our traffic safety education programme (Downing, C.
S., 1987 [10]). There is the need to review our strategies by targeting children in the schools and outside the
school system to inculcate in them safe road use habits and to encourage them to teach other children on road
safety issues (Jacobs and Aeron-Thomas, 2000 [11]).
4.1.3 Casualty by Gender
According to the 2010 Population and Housing Census, males constitute 48.8% of the national
population. However, the casualty distribution by gender as illustrated in Table 4.2 shows high percentages for
male fatalities and total casualties as 64.4% and 60.2% respectively. This implies that high numbers of the male
population are either being killed or maimed as a result of pedestrian accidents. The reason may perhaps be
attributed to the leadership roles they play as heads of households and the attendant responsibilities which
require them to make more trips.
Table 4.2 – Distribution of Casualties by Gender
Gender
Fatalities Total Casualties
Number Percentage (%) Number Percentage (%)
Male 3,107 64.4 10,742 60.2
Female 1,714 35.6 7,111 39.8
Total 4,821 100.0 17,853 100.0
Source: National Pedestrian Accident Data, 2006 – 2010, BRRI
4.1.4 Accident by Vehicle Type
The proportion of vehicle types involved in pedestrian accidents is presented in Fig 4.2. From the
distribution, it is clear that light vehicles (cars, pick-ups and minibuses) were over-represented and accounted
for 76% of the total vehicles involved in pedestrian accidents. This is foreseen, especially, as light vehicles
constitutes about 70% of the total number of registered vehicles in the main traffic stream (DVLA, 2010 [12]).
Heavy goods vehicles and cycles were also observed to be involved in pedestrian accidents as they represented
8% and 7% of the total vehicles involvement respectively. Buses and minibuses together constituted 29% of the
total vehicles involved in pedestrian accidents. Thus, drivers of vehicles mostly involved in pedestrian accidents
should feature prominently in road safety education and enforcement programmes.
Characteristics of Pedestrian Accidents on Trunk Roads in Ghana
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4.1.5 Accident by Time of Day
Table 4.3 shows the distribution of pedestrian accident severity by time of day. The time of day that
pedestrian accidents occur was then defined from 6am to 6pm to represent times of some appreciable visibility
(day) and from 6pm to 6am to represent night time. From the Table, day time accidents represented 64%, while
night time accidents recorded 36%. Generally, pedestrian activities at night are less pronounced than during the
day. However, in terms of fatality, the rates are about the same for both day time and night time accidents; an
implication that a pedestrian risk of death when knocked down by a vehicle is the same at night and during the
day. The situation is quite worrisome as activities and interactions on the road environment at night are less
intense and thus poor visibility may have been responsible for this phenomenon. This finding situates well with
the outcome of a study on the characteristics of pedestrian accidents in eight (8) countries by Downing
(Downing, 1991 [13]), it was revealed that the proportion of pedestrians killed on unlit roads was 2 or 3 times
higher in developing countries than in developed countries; assigning problems of inadequate street lighting and
poor pedestrian conspicuity as the reasons.
Table 4.3 – Distribution of Accident Severity by Time of Day
Accident Severity
Time of Day
Total
06:00 – 18:00 18:00 – 06:00
Fatality 2,199 1,890 4,089
Hospitalized 4,228 2,315 6,543
Not Hospitalized 3,590 1,496 5,086
Total 10,017 5,701 15,718
Source: National Accident Data, 2006 – 2010, BRRI
4.1.6 Summary of Risk Indicators
The data described the character of the national pedestrian accident situation and established the extent
of risk in a rural setting along a trunk road. Pedestrians of 15 - 45 years in the traffic stream were found to be the
most vulnerable and every three out of five male pedestrian risked serious injury when crossing a road in a rural
settlement. Light vehicles (cars, pick-ups and minibuses) accounted for 76% of vehicles that were involved in
pedestrian accidents. Considering the fact that pedestrian activity at night is less pronounced, it was not
surprising that substantial numbers of pedestrian accidents were recorded during the day than at night. In terms
of fatality, the risk of a pedestrian dying when hit by a vehicle at night was higher than during the day.
In order to provide a regional perspective to the pedestrian accident situation, the extent of deviations
of regional values from the “national” average were estimated. The key accident risk factors used in the
assessment were the most vulnerable age group, male pedestrian at risk, vehicles involved in accidents, day time
accidents and accident distribution in rural settlements. These factors were considered key elements in the traffic
system whose interactions were responsible for pedestrian accident causation.
4.2 Regional Characteristics of Pedestrian Accidents
4.2.1 Most Vulnerable Age Group
The distribution of serious injury accidents of pedestrians in the 15 – 45 year group is presented in Fig.
4.3. From the chart, it is clear pedestrians in this age group who lived in the three (3) northern regions of Ghana,
namely; Northern, Upper West and Upper East are reasonably safe. The Volta, Western and Brong Ahafo
Characteristics of Pedestrian Accidents on Trunk Roads in Ghana
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regions provided the next group of pedestrians who showed some relative safety as their average index (0.34)
was below the national index of 0.50. Pedestrians in the Ashanti, Eastern and Central regions were found to be
most at risk as they recorded an average index of 0.56. In Greater Accra region, the situation was alarming as it
recorded an index of almost unity (0.99). The implication is that a pedestrian belonging to the most vulnerable
age group in the Greater Accra region stands 100% risk of death or serious disability when hit by a vehicle than
a pedestrian in the Upper West region.
This outcome is not surprising as the most economically active persons are accident prone, especially,
those in the Greater Accra region because the region experienced the highest population growth rate (3.1%)
between 2000 and 2010, and from the distribution of vehicles registration, recorded the highest growth rate of
44% (Ghana Statistical Services, 2012 [14]). It is evident that the intensity of socio-economic activity, human
and vehicular traffic interactions have significant impact on the incidence of pedestrian accidents.
4.2.2 Male Pedestrian at Risk
Fig. 4.4 illustrates the regional profile of the male pedestrian casualty. From the index computation, it
is clear that the male pedestrian in the Ashanti, Central, Eastern and Greater Accra regions are at risk but the
male pedestrian in the Greater Accra region is most at risk. An index of 1.25 shows the gravity of the
vulnerability and the need to appraise the situation in order to find the right interventions. The reason though
may not be far-fetched as enormous social and economic challenges pose to the male pedestrian required him to
make trips more frequently and therefore exposed to the risks of road traffic accidents.
4.2.3 Vehicle Involvement
The distribution of pedestrian accidents by the most involved vehicle types in the regions is presented
in Table 4.4. Generally, it was found that the types of vehicles mostly involved in pedestrian accidents are light
vehicles (cars, pick-ups and minibuses). In terms of ranking, however, almost all the vehicle types were
represented in one region or the other. The Ashanti, Central and Greater Accra regions were represented by cars,
Characteristics of Pedestrian Accidents on Trunk Roads in Ghana
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minibuses and buses, while, the Brong Ahafo, Eastern and Western regions showed similar ranking in cars,
minibuses and heavy goods vehicles. The trend however changed in the remaining regions and was irregular.
For instance, in the Upper East and West regions, motorcycles ranked first, while it ranked second in the
Northern region and third in the Volta region. It is not surprising that motorcycles featured as one of the most
vehicle involved in pedestrian accidents due to the high patronage of motorcycles in these regions. Therefore
strategies to address safety concerns should be different in the regions and for different targets of the most
involved vehicles causing pedestrian accidents.
Table 4.4 – Distribution of vehicles most involved in accidents across the regions
Region
Vehicle Involvement
Rank 1 % Rank 2 % Rank 3 %
Ashanti Car 44 Minibus 20 Bus 14
Brong Ahafo Car 49 Minibus 11 HGV 11
Central Car 49 Minibus 18 Bus 11
Eastern Car 47 Minibus 23 HGV 10
Greater Accra Car 50 Minibus 16 Bus 12
Northern Car 31 Motor Cycle 17 HGV 17
Upper East Motor Cycle 36 Car 27 HGV 12
Upper West Motor Cycle 48 Pickup 15 Minibus 13
Volta Car 39 Minibus 26 Motor Cycle 11
Western Car 50 Minibus 14 HGV 11
National Car 49 Minibus 18 Bus 11
Source: National Pedestrian Accident Data, 2006 – 2010, BRRI
4.2.4 Day Time Accidents
Table 4.5 shows pedestrian accident distribution by day in the regions. Day time accidents were not
serious issues in the Northern, Upper East and Upper West regions. In the Brong Ahafo, Western and Volta
regions, pedestrians showed some measure of risk to accidents. The situation is however different in the
Ashanti, Central, Eastern and Greater Accra regions, where the indices computed are above the national average
of 0.26.
It is important to note that traffic flow and human activities during the day are more pronounced than at
night. Moreover, the size of the working population and the intensity of social and economic activities in the
Ashanti, Central, Eastern and Greater Accra regions are reasonably high and may have accounted for the degree
of pedestrian vulnerability. It is important to note the regional differences in pedestrian risks and to identify the
effective safety appurtenances that will impact day time accidents. The exception to this situation however is in
the Upper West region where the number of pedestrian accidents recorded in the day and night was the same. A
different diagnosis and strategy will be required to address this peculiar phenomenon.
Table 4.5 – Distribution of Serious Pedestrian Injury Accidents by Day Time in the Regions
Region
Day Time
Index
Serious Injury Accidents Population
Ashanti 1,465 4,780,380 0.306
Brong Ahafo 387 2,310,983 0.167
Central 647 2,201,863 0.294
Eastern 915 2,633,154 0.347
Greater Accra 1,904 4,010,054 0.475
Northern 101 2,479,461 0.041
Upper East 77 1,046,545 0.074
Upper West 34 702,110 0.048
Volta 397 2,118,252 0.187
Western 500 2,376,021 0.210
Characteristics of Pedestrian Accidents on Trunk Roads in Ghana
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National 6,427 24,658,823 0.261
Source: National Pedestrian Accident Data, 2006 – 2010, BRRI
4.2.5 Accidents in Rural Settlements
The distribution of pedestrian accidents in rural settlements across the regions is presented in Fig. 4.5.
Pedestrian accidents were over-represented in urban road corridors but in terms of casualties rural settlements
recorded considerable numbers of road deaths and serious disabilities. Fig. 4.5 illustrates the scale of the
problem in the regions. It is clear that the Northern, Upper East and Upper West regions do not have the
problem of high incidence of pedestrian accidents in rural settlements. This may perhaps be due to the
settlement pattern of rural communities in the three (3) northern regions. They are generally far from the road
environment and roadside activities are not as intense as in the other regions. The Greater Accra regional index
of 0.13 is below the national average of 0.19, suggesting that serious injury accidents may not necessarily be a
problem in rural communities within the region.
It is not surprising the consequence of rural pedestrian accidents is severe in the Eastern, Central and
Ashanti regions. This is due to the fact that most rural settlements along trunk roads in these regions are quite
close to the roads. A situation which encourages roadside activity, thus, pedestrians in rural settlements are
exposed to accident risk because of the proximity and interactions within the road environment. The high
incidence of pedestrian accidents is attributed to inadequate provisions of pedestrian facilities and indiscriminate
use of land within the road environment without due consideration to development controls.
4.2.6 Summary of Risk Indicators
An assessment of the regional pedestrian accident data provided another dimension to the study by
revealing specific details to the general description of pedestrian accidents. The highlights of key findings have
been presented.
 A pedestrian within the 15 – 45 age category in the Greater Accra region stands 100% risk of death or
serious disability when hit by a vehicle than a pedestrian in the same age group in the Upper West region;
 The male pedestrian in the Ashanti, Central, Eastern and Greater Accra regions are more at risk but the
male pedestrian in the Greater Accra region is most at risk;
 The dominant vehicle type in a region contributed significantly to the number of pedestrian accidents
recorded as in four (4) regions motorcycles featured as one of the vehicle mostly involved in pedestrian
accidents due to their high patronage;
 The size of the working population and the intensity of social and economic activities in the Ashanti,
Central, Eastern and Greater Accra regions had some bearing on the degree of pedestrian vulnerability
during the day; and
 The high numbers of rural pedestrian accidents in the Eastern, Central and Ashanti regions is due to the fact
that most rural settlements are in close proximity with the trunk roads encouraging roadside social and
economic activities.
V. CONCLUSION AND RECOMMENDATIONS
The objective of this study was to describe the characteristics of pedestrian accidents and to determine
potential causal factors that pose risk to pedestrians on trunk roads. Apart from providing a general description,
the regional perspectives of the pedestrian accident situation also revealed the complexity of the problem.
Characteristics of Pedestrian Accidents on Trunk Roads in Ghana
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The extent of pedestrian risk on trunk roads was highlighted by the fact that three out of five male
pedestrians risked dying when crossing a road in a rural settlement. Pedestrians between the ages of 14 and 46
were found as the most vulnerable and light vehicles (cars, pick-ups and minibuses) accounted for 76% of
vehicles involved in pedestrian accidents. Considering the fact that pedestrian activity at night is less
pronounced, it was not surprising that day time accidents dominated but in terms of fatality the risk of a
pedestrian death when hit by a vehicle at night was higher than that of the day.
Another dimension to this study was an assessment of the regional differences in the pedestrian
accident data. Findings from the investigation were quite revealing as pedestrians within the 15 – 45 age
category in the Greater Accra region risk dying or having serious disability when hit by a vehicle than a
pedestrian in the same age group in the Upper West region. Motorcycles featured as one of the vehicles mostly
involved in pedestrian accidents in the Volta, Northern, Upper East and Upper West regions. This is to be
expected because of the high patronage of motorcycles in these regions. The size of the working population and
the intensity of social and economic activities had a bearing on degree of pedestrian vulnerability in the Ashanti,
Central, Eastern and Greater Accra regions. Again, the increasing risk of pedestrians in rural communities on
trunk roads in the Eastern, Central and Ashanti regions was due to the fact that most rural settlements feature
roads with intense roadside social and economic activities.
The diversity of risk factors realized in the analysis of the regional accident data set gives an indication
of the need to properly contextualize the accident problem for effective diagnosis. Therefore, data collected for
the study variables, should be all inclusive and representative of the peculiarities of all segments of the study
area. This study used rudimentary techniques to characterize pedestrian accidents. It has also shown the
importance of situating the accident investigation to cover all relevant elements of the study domain for
meaningful and effective diagnosis of the problem. The method of accident characterization should therefore
precede any sophisticated accident investigation method in order to provide insight into the issues for analysis
and make informed decisions on intervention strategies.
REFERENCES
[1]. Afukaar, F. K., The Characteristics of Pedestrian Accidents in Ghana, Bi-Annual Journal of Building and Road
Research Institute (Council for Scientific and Industrial Research), Ghana, Vol. 7, 2001, pp. 1 - 4.
[2]. Road Traffic Crashes in Ghana, Accident Statistics 2010, Building and Road Research Institute (Council for
Scientific and Industrial Research), Kumasi, 2010.
[3]. G-Basyonny, K. and Sayed, T., Comparison of Two Negative Binomial Regression Techniques in Developing
Accident Prediction Models, Transportation Research Board No 1950, 2006.
[4]. Analysis Ch 3 pg 1, Descriptive Analysis, ww.tulane.edu/.../Analysis2/.../pg1%20Descriptive%20analy.
[5]. Annual Review Report 2005, Ministry of Roads and Highways, 2006.
[6]. Road Condition Report Year 2010, Ghana Highway Authority, Ministry of Roads and Highways, 2011.
[7]. Wikipedia, the Free Encyclopedia, en.wikipedia.org/wiki/Descriptive_statistics.
[8]. National Road Safety Commission, 2010 Annual Report, 2011.
[9]. Traffic Safety Facts 2009 Data, US Department of Transportation, National Highway Traffic Safety
Administration, DOT HS 811 394.
[10]. Downing, C. S., The Education of Children in Road Safety. Proceedings of the Symposium: The Healthy
Community – Child Safety as part of Health Promotion Activities, Stockholm, 1987.
[11]. Jacobs, G. and Aeron-Thomas A., Africa Road Safety Review Report, Project Report PR/INT/659/00, Transport
Research Laboratory, 2000, pp ii.
[12]. Summary of Vehicles Registered in Ghana by Category, Driver Vehicle and Licensing Authority, 2010.
[13]. Downing A. J., Pedestrian Safety in Developing Countries, Proceedings of the Vulnerable Road User:
International Conference on Traffic Safety; New Dehli, 1991. 1: 4 - 6.
[14]. 2010 Population and Housing Census, Summary of Final Results, Ghana Statistical Service, May 2012.

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International Refereed Journal of Engineering and Science (IRJES)

  • 1. International Refereed Journal of Engineering and Science (IRJES) ISSN (Online) 2319-183X, (Print) 2319-1821 Volume 2, Issue 5 (May 2013), PP.46-54 www.irjes.com www.irjes.com 46 | Page Characteristics of Pedestrian Accidents on Trunk Roads in Ghana Daniel Atuah Obeng Department of Civil Engineering, Kwame Nkrumah University of Science and Technology, Ghana ABSTRACT: Annually, pedestrian accidents account for over forty percent (40%) of all road traffic accidents whilst trunk roads record two-thirds of all road traffic fatalities. Whilst the unpredictability nature of accidents is well documented, diagnostic tools require to establish causality and to inform intervention strategies have been many but with varied successes. Over the years, accident statistics have shown no discernible pattern in improvement levels even with so much efforts and pedestrians continue to bear the brunt of the inefficiencies on the trunk road environment. This study employed descriptive analysis to identify potential pedestrian accident causal factors from key attributes of the road transport system. A 5-year accident data, i.e. from 2006 to 2010, on a trunk road length totalling 13,263km, was processed using the Microcomputer Accident Analysis Package (MAAP) 5 software. The analysis of the national and regional data sets resulted in a variety of distinct risk factors obtained for different regions in the study area. This rudimentary method of accident investigation identified the unique characteristics of potential and possible risk factors of pedestrian accidents in different socio-economic environments. It has also reinforced the need for proper accident problem contextualization and data representation using more sophisticated methods for accident investigation. Keywords – Characteristics, Descriptive Analysis, Ghana, Pedestrian Accident, Trunk Road. I. INTRODUCTION AND APPROACH TO THE STUDY In developing countries, pedestrians represent the most dominant users of road space but there is a huge deficit in the provision of pedestrian infrastructure. This often results in pedestrian accidents as it is established that annually pedestrian accidents accounted for over forty percent (40%) of the distribution of road traffic accidents by road user type (Afukaar, 2001 [1]). Trunk roads (highways) account for two-thirds of all road traffic fatalities with pedestrians representing about forty percent (40%) of the accident victims (BRRI, 2010 [2]). Over the years, several approaches and methods have been used to assess road traffic safety; from single accident rate to accident prediction models that relate the expected accident frequency at a road location to its traffic and geometric characteristics, users of the road as well as its operating system (G-Basyonny and Sayed, 2006 [3]). The unpredictability nature of pedestrian accidents however requires a more thorough and systematic diagnosis of the accident problem in order to inform appropriate intervention strategies. Using rudimentary analytical tools, key attributes of the road transport system are assessed and their relationships with pedestrian accident incidence established. This preliminary investigation therefore offered the opportunity to identify potential and possible causal factors from the attributes of the „pedestrian‟ accident victim, the vehicle, road alignment elements and type of land use within the accident‟s environment. In Ghana, the Transport and Research Laboratory (TRL) Microcomputer Accident Analysis Package (MAAP) 5 software has been the main tool for accident analysis and reporting. Though quite elementary, it presents accident and casualty data including details of the vehicle involved, climatic conditions and the road environment. A 5-year pedestrian accident data, i.e. from 2006 to 2010, on the trunk roads were processed employing the MAAP 5 software. From the synthesized data, descriptive analysis techniques were used to identify potential pedestrian accident causal factors (Analysis, Ch. 3 [4]). A general description of pedestrian accidents was presented at the national and regional levels to show the distinct differences in risk factors. From these perspectives, safety practitioners are well informed on the uniqueness of the problem and the appropriateness of methods employed in accident investigation. II. SCOPE OF STUDY Since 2001, the Ghana Highway Authority (GHA) has been improving and maintaining a total trunk road network of 13,263 km. In terms of function, the network has been categorized into three groupings, namely: national (roads linking regional capitals to national capital), inter-regional (roads linking regional capitals) and regional (roads linking district capitals to regional capitals) roads (MRH, 2005 [5]).
  • 2. Characteristics of Pedestrian Accidents on Trunk Roads in Ghana www.irjes.com 47 | Page The Ghana Highway Authority uses a Pavement Management and Maintenance Programme (PMMP) as its Pavement Management System (PMS) tool to effectively allocate resources to address the management and maintenance requirements of the trunk road network (GHA, 2010 [6]). From its portfolio of paved and gravel roads, condition scores computed for homogeneous sections are reported. It was indicated that the overall condition mix of the trunk road network had dropped substantially compared to trends in recent past. The reasons assigned to the drop were attributed to very little or no routine maintenance interventions in the previous year, among others. Table 1.1 presents the overall condition mix of the trunk road network as at the end of 2010. Table 1.1 – Road surface condition mix Condition Description Length (km) Percentage (%) Good 3,865 29 Fair 5,841 44 Poor 3,56 27 Total 13,263 100 Source: Road Condition Report, 2010, GHA, MRH Geographically, the study domain covered pedestrian accident data recorded on all trunk roads in the ten (10) regions of Ghana. Fig. 1.1 shows the map of the trunk road network and the different trunk road types. Fig. 1.1 – Trunk road network III. DATA PROCESSING AND ANALYSIS Information on road traffic accidents is available at the National Road Traffic Accident database at the Building and Road Research Institute (BRRI) in Kumasi, Ghana. The database is compiled from police files using a standard accident report form. This form includes information about the accident location, the vehicle(s) involved and casualty details. In general, a police report contains additional information from casualties, witnesses, and report by a vehicle examiner from the Driver and Vehicle Licensing Authority (DVLA), a plan of the accident indicating the location and a general report by the investigator summarizing the facts surrounding the accident. The accident information is then coded and stored in computers at the BRRI and analyzed with the help of the MAAP software. The software has capacity to analyze accidents at specific locations, using stick diagrams to display key accident features in the form of a column (or stick) of data. The investigator then chooses from a number of different sticks and can sort the variables into any specified order. It also provides a priority listing of the worst accident sites in a city or area. Accident reference numbers can be quickly obtained and individual records displayed or printed.
  • 3. Characteristics of Pedestrian Accidents on Trunk Roads in Ghana www.irjes.com 48 | Page For this study, relevant information for each accident was retrieved and analyzed using the kilometer analysis facility and cross-tabulations available in the MAAP software. Accident and casualty data obtained included characteristics of victim (age and sex), type of vehicle involved and its movement, month, day and hour of accident, accident and casualty severity, visibility, direction and accident location type. IV. DATA PRESENTATION AND DISCUSSION The processed pedestrian accident data and the results of the synthesized data were presented as accident severity by location type, casualty severity by age group, casualty by gender, accident by vehicle type, and accident by time of day. The distributions and summaries provided a general description at the national level (Wikipedia [7]). In providing additional perspective to the character of pedestrian accidents on trunk roads, regional differences were discussed based on the extent of dispersion of computed regional values from the national average for different established pedestrian accident attributes. 4.1 General Characteristics of Pedestrian Accidents 4.1.1 Accident Severity by Location Type Table 4.1 illustrates the national distribution of accident severity and also presents accident severity as recorded in the non-urban environment. In all, a total of 15,710 pedestrian accidents were recorded, out of which, 10,626 represented fatal and serious injury accidents (67.6%) and 5,084 accounted for minor accidents (32.4%) (National Road Safety Commission, 2011 [8]). From the statistics on road deaths and serious injuries, it is evident that the outcome of a pedestrian accident is most usually very severe. Table 4.1 – Distribution of Accident Severity by Location Accident Severity National Non-Urban Environment Number Percentage (%) Number Percentage (%) Accidents Fatal 4,088 26.0 2,233 39.8 Hospitalized 6,538 41.6 2,361 42.1 Injured Not-Hospitalized 5,084 32.4 1,014 18.1 Total 15,710 100.0 5,608 100.0 Source: National Pedestrian Accident Data, 2006 – 2010, BRRI In the non-urban environment, out of a total of 5,608 accidents, 4,594 were fatal and injury accidents representing 82% of the total pedestrian accidents recorded in that setting. The proportion of deaths and serious injuries in rural settlements along trunk roads was substantial as four out of every five persons involved in pedestrian accidents was either killed or had some form of serious disability. 4.1.2 Casualty Severity by Age Group The distribution of casualties by the different age groups is illustrated in Fig. 4.1. It indicates the number of persons killed or seriously injured as against minor injuries for the various age groups. From Fig. 1.1, persons aged between 14 and 45 years were most at risk as the group alone accounted for 48% of pedestrian deaths and persons with serious disability. Children below the age of 15 years represented the next sizeable number of persons at risk representing 32% of persons with serious injuries. Those above 65 years were the least vulnerable in terms of age grouping but one in two persons of that age group risk dying when involved in an accident. It was also quite revealing that persons between the ages of 44 and 65, supposed to be actively working, only accounted for 13% of the total casualties recorded. This economically active age group is presumed to represent a sizeable proportion of the pedestrian volume that uses the road space and will therefore be susceptible to road traffic accidents.
  • 4. Characteristics of Pedestrian Accidents on Trunk Roads in Ghana www.irjes.com 49 | Page A Traffic Safety Fact Sheet publication from the US Department of Transportation showed that persons between the ages of 15 and 45 years were most at risk of death (41%) followed by persons between the ages of 45 and 65 years (34%). Persons above 65 years accounted for 19% of pedestrian deaths and children below the age of 15 years represented only 7% of pedestrians killed (Traffic Safety Facts 2009 [9]). It is instructive to note that while persons between the ages of 15 and 45 years share commonality either in Ghana or in the United States of America (USA) regarding the proportion of pedestrians most at risk, the other age groups show reasonable degree of variance in the distribution of pedestrians most at risk. For instance, children below 15 years in Ghana represented a sizeable proportion of persons with serious disability as a result of pedestrian accidents (32%) but the same age group in the USA recorded only 7% of pedestrian deaths. This development suggests a serious defect with our traffic safety education programme (Downing, C. S., 1987 [10]). There is the need to review our strategies by targeting children in the schools and outside the school system to inculcate in them safe road use habits and to encourage them to teach other children on road safety issues (Jacobs and Aeron-Thomas, 2000 [11]). 4.1.3 Casualty by Gender According to the 2010 Population and Housing Census, males constitute 48.8% of the national population. However, the casualty distribution by gender as illustrated in Table 4.2 shows high percentages for male fatalities and total casualties as 64.4% and 60.2% respectively. This implies that high numbers of the male population are either being killed or maimed as a result of pedestrian accidents. The reason may perhaps be attributed to the leadership roles they play as heads of households and the attendant responsibilities which require them to make more trips. Table 4.2 – Distribution of Casualties by Gender Gender Fatalities Total Casualties Number Percentage (%) Number Percentage (%) Male 3,107 64.4 10,742 60.2 Female 1,714 35.6 7,111 39.8 Total 4,821 100.0 17,853 100.0 Source: National Pedestrian Accident Data, 2006 – 2010, BRRI 4.1.4 Accident by Vehicle Type The proportion of vehicle types involved in pedestrian accidents is presented in Fig 4.2. From the distribution, it is clear that light vehicles (cars, pick-ups and minibuses) were over-represented and accounted for 76% of the total vehicles involved in pedestrian accidents. This is foreseen, especially, as light vehicles constitutes about 70% of the total number of registered vehicles in the main traffic stream (DVLA, 2010 [12]). Heavy goods vehicles and cycles were also observed to be involved in pedestrian accidents as they represented 8% and 7% of the total vehicles involvement respectively. Buses and minibuses together constituted 29% of the total vehicles involved in pedestrian accidents. Thus, drivers of vehicles mostly involved in pedestrian accidents should feature prominently in road safety education and enforcement programmes.
  • 5. Characteristics of Pedestrian Accidents on Trunk Roads in Ghana www.irjes.com 50 | Page 4.1.5 Accident by Time of Day Table 4.3 shows the distribution of pedestrian accident severity by time of day. The time of day that pedestrian accidents occur was then defined from 6am to 6pm to represent times of some appreciable visibility (day) and from 6pm to 6am to represent night time. From the Table, day time accidents represented 64%, while night time accidents recorded 36%. Generally, pedestrian activities at night are less pronounced than during the day. However, in terms of fatality, the rates are about the same for both day time and night time accidents; an implication that a pedestrian risk of death when knocked down by a vehicle is the same at night and during the day. The situation is quite worrisome as activities and interactions on the road environment at night are less intense and thus poor visibility may have been responsible for this phenomenon. This finding situates well with the outcome of a study on the characteristics of pedestrian accidents in eight (8) countries by Downing (Downing, 1991 [13]), it was revealed that the proportion of pedestrians killed on unlit roads was 2 or 3 times higher in developing countries than in developed countries; assigning problems of inadequate street lighting and poor pedestrian conspicuity as the reasons. Table 4.3 – Distribution of Accident Severity by Time of Day Accident Severity Time of Day Total 06:00 – 18:00 18:00 – 06:00 Fatality 2,199 1,890 4,089 Hospitalized 4,228 2,315 6,543 Not Hospitalized 3,590 1,496 5,086 Total 10,017 5,701 15,718 Source: National Accident Data, 2006 – 2010, BRRI 4.1.6 Summary of Risk Indicators The data described the character of the national pedestrian accident situation and established the extent of risk in a rural setting along a trunk road. Pedestrians of 15 - 45 years in the traffic stream were found to be the most vulnerable and every three out of five male pedestrian risked serious injury when crossing a road in a rural settlement. Light vehicles (cars, pick-ups and minibuses) accounted for 76% of vehicles that were involved in pedestrian accidents. Considering the fact that pedestrian activity at night is less pronounced, it was not surprising that substantial numbers of pedestrian accidents were recorded during the day than at night. In terms of fatality, the risk of a pedestrian dying when hit by a vehicle at night was higher than during the day. In order to provide a regional perspective to the pedestrian accident situation, the extent of deviations of regional values from the “national” average were estimated. The key accident risk factors used in the assessment were the most vulnerable age group, male pedestrian at risk, vehicles involved in accidents, day time accidents and accident distribution in rural settlements. These factors were considered key elements in the traffic system whose interactions were responsible for pedestrian accident causation. 4.2 Regional Characteristics of Pedestrian Accidents 4.2.1 Most Vulnerable Age Group The distribution of serious injury accidents of pedestrians in the 15 – 45 year group is presented in Fig. 4.3. From the chart, it is clear pedestrians in this age group who lived in the three (3) northern regions of Ghana, namely; Northern, Upper West and Upper East are reasonably safe. The Volta, Western and Brong Ahafo
  • 6. Characteristics of Pedestrian Accidents on Trunk Roads in Ghana www.irjes.com 51 | Page regions provided the next group of pedestrians who showed some relative safety as their average index (0.34) was below the national index of 0.50. Pedestrians in the Ashanti, Eastern and Central regions were found to be most at risk as they recorded an average index of 0.56. In Greater Accra region, the situation was alarming as it recorded an index of almost unity (0.99). The implication is that a pedestrian belonging to the most vulnerable age group in the Greater Accra region stands 100% risk of death or serious disability when hit by a vehicle than a pedestrian in the Upper West region. This outcome is not surprising as the most economically active persons are accident prone, especially, those in the Greater Accra region because the region experienced the highest population growth rate (3.1%) between 2000 and 2010, and from the distribution of vehicles registration, recorded the highest growth rate of 44% (Ghana Statistical Services, 2012 [14]). It is evident that the intensity of socio-economic activity, human and vehicular traffic interactions have significant impact on the incidence of pedestrian accidents. 4.2.2 Male Pedestrian at Risk Fig. 4.4 illustrates the regional profile of the male pedestrian casualty. From the index computation, it is clear that the male pedestrian in the Ashanti, Central, Eastern and Greater Accra regions are at risk but the male pedestrian in the Greater Accra region is most at risk. An index of 1.25 shows the gravity of the vulnerability and the need to appraise the situation in order to find the right interventions. The reason though may not be far-fetched as enormous social and economic challenges pose to the male pedestrian required him to make trips more frequently and therefore exposed to the risks of road traffic accidents. 4.2.3 Vehicle Involvement The distribution of pedestrian accidents by the most involved vehicle types in the regions is presented in Table 4.4. Generally, it was found that the types of vehicles mostly involved in pedestrian accidents are light vehicles (cars, pick-ups and minibuses). In terms of ranking, however, almost all the vehicle types were represented in one region or the other. The Ashanti, Central and Greater Accra regions were represented by cars,
  • 7. Characteristics of Pedestrian Accidents on Trunk Roads in Ghana www.irjes.com 52 | Page minibuses and buses, while, the Brong Ahafo, Eastern and Western regions showed similar ranking in cars, minibuses and heavy goods vehicles. The trend however changed in the remaining regions and was irregular. For instance, in the Upper East and West regions, motorcycles ranked first, while it ranked second in the Northern region and third in the Volta region. It is not surprising that motorcycles featured as one of the most vehicle involved in pedestrian accidents due to the high patronage of motorcycles in these regions. Therefore strategies to address safety concerns should be different in the regions and for different targets of the most involved vehicles causing pedestrian accidents. Table 4.4 – Distribution of vehicles most involved in accidents across the regions Region Vehicle Involvement Rank 1 % Rank 2 % Rank 3 % Ashanti Car 44 Minibus 20 Bus 14 Brong Ahafo Car 49 Minibus 11 HGV 11 Central Car 49 Minibus 18 Bus 11 Eastern Car 47 Minibus 23 HGV 10 Greater Accra Car 50 Minibus 16 Bus 12 Northern Car 31 Motor Cycle 17 HGV 17 Upper East Motor Cycle 36 Car 27 HGV 12 Upper West Motor Cycle 48 Pickup 15 Minibus 13 Volta Car 39 Minibus 26 Motor Cycle 11 Western Car 50 Minibus 14 HGV 11 National Car 49 Minibus 18 Bus 11 Source: National Pedestrian Accident Data, 2006 – 2010, BRRI 4.2.4 Day Time Accidents Table 4.5 shows pedestrian accident distribution by day in the regions. Day time accidents were not serious issues in the Northern, Upper East and Upper West regions. In the Brong Ahafo, Western and Volta regions, pedestrians showed some measure of risk to accidents. The situation is however different in the Ashanti, Central, Eastern and Greater Accra regions, where the indices computed are above the national average of 0.26. It is important to note that traffic flow and human activities during the day are more pronounced than at night. Moreover, the size of the working population and the intensity of social and economic activities in the Ashanti, Central, Eastern and Greater Accra regions are reasonably high and may have accounted for the degree of pedestrian vulnerability. It is important to note the regional differences in pedestrian risks and to identify the effective safety appurtenances that will impact day time accidents. The exception to this situation however is in the Upper West region where the number of pedestrian accidents recorded in the day and night was the same. A different diagnosis and strategy will be required to address this peculiar phenomenon. Table 4.5 – Distribution of Serious Pedestrian Injury Accidents by Day Time in the Regions Region Day Time Index Serious Injury Accidents Population Ashanti 1,465 4,780,380 0.306 Brong Ahafo 387 2,310,983 0.167 Central 647 2,201,863 0.294 Eastern 915 2,633,154 0.347 Greater Accra 1,904 4,010,054 0.475 Northern 101 2,479,461 0.041 Upper East 77 1,046,545 0.074 Upper West 34 702,110 0.048 Volta 397 2,118,252 0.187 Western 500 2,376,021 0.210
  • 8. Characteristics of Pedestrian Accidents on Trunk Roads in Ghana www.irjes.com 53 | Page National 6,427 24,658,823 0.261 Source: National Pedestrian Accident Data, 2006 – 2010, BRRI 4.2.5 Accidents in Rural Settlements The distribution of pedestrian accidents in rural settlements across the regions is presented in Fig. 4.5. Pedestrian accidents were over-represented in urban road corridors but in terms of casualties rural settlements recorded considerable numbers of road deaths and serious disabilities. Fig. 4.5 illustrates the scale of the problem in the regions. It is clear that the Northern, Upper East and Upper West regions do not have the problem of high incidence of pedestrian accidents in rural settlements. This may perhaps be due to the settlement pattern of rural communities in the three (3) northern regions. They are generally far from the road environment and roadside activities are not as intense as in the other regions. The Greater Accra regional index of 0.13 is below the national average of 0.19, suggesting that serious injury accidents may not necessarily be a problem in rural communities within the region. It is not surprising the consequence of rural pedestrian accidents is severe in the Eastern, Central and Ashanti regions. This is due to the fact that most rural settlements along trunk roads in these regions are quite close to the roads. A situation which encourages roadside activity, thus, pedestrians in rural settlements are exposed to accident risk because of the proximity and interactions within the road environment. The high incidence of pedestrian accidents is attributed to inadequate provisions of pedestrian facilities and indiscriminate use of land within the road environment without due consideration to development controls. 4.2.6 Summary of Risk Indicators An assessment of the regional pedestrian accident data provided another dimension to the study by revealing specific details to the general description of pedestrian accidents. The highlights of key findings have been presented.  A pedestrian within the 15 – 45 age category in the Greater Accra region stands 100% risk of death or serious disability when hit by a vehicle than a pedestrian in the same age group in the Upper West region;  The male pedestrian in the Ashanti, Central, Eastern and Greater Accra regions are more at risk but the male pedestrian in the Greater Accra region is most at risk;  The dominant vehicle type in a region contributed significantly to the number of pedestrian accidents recorded as in four (4) regions motorcycles featured as one of the vehicle mostly involved in pedestrian accidents due to their high patronage;  The size of the working population and the intensity of social and economic activities in the Ashanti, Central, Eastern and Greater Accra regions had some bearing on the degree of pedestrian vulnerability during the day; and  The high numbers of rural pedestrian accidents in the Eastern, Central and Ashanti regions is due to the fact that most rural settlements are in close proximity with the trunk roads encouraging roadside social and economic activities. V. CONCLUSION AND RECOMMENDATIONS The objective of this study was to describe the characteristics of pedestrian accidents and to determine potential causal factors that pose risk to pedestrians on trunk roads. Apart from providing a general description, the regional perspectives of the pedestrian accident situation also revealed the complexity of the problem.
  • 9. Characteristics of Pedestrian Accidents on Trunk Roads in Ghana www.irjes.com 54 | Page The extent of pedestrian risk on trunk roads was highlighted by the fact that three out of five male pedestrians risked dying when crossing a road in a rural settlement. Pedestrians between the ages of 14 and 46 were found as the most vulnerable and light vehicles (cars, pick-ups and minibuses) accounted for 76% of vehicles involved in pedestrian accidents. Considering the fact that pedestrian activity at night is less pronounced, it was not surprising that day time accidents dominated but in terms of fatality the risk of a pedestrian death when hit by a vehicle at night was higher than that of the day. Another dimension to this study was an assessment of the regional differences in the pedestrian accident data. Findings from the investigation were quite revealing as pedestrians within the 15 – 45 age category in the Greater Accra region risk dying or having serious disability when hit by a vehicle than a pedestrian in the same age group in the Upper West region. Motorcycles featured as one of the vehicles mostly involved in pedestrian accidents in the Volta, Northern, Upper East and Upper West regions. This is to be expected because of the high patronage of motorcycles in these regions. The size of the working population and the intensity of social and economic activities had a bearing on degree of pedestrian vulnerability in the Ashanti, Central, Eastern and Greater Accra regions. Again, the increasing risk of pedestrians in rural communities on trunk roads in the Eastern, Central and Ashanti regions was due to the fact that most rural settlements feature roads with intense roadside social and economic activities. The diversity of risk factors realized in the analysis of the regional accident data set gives an indication of the need to properly contextualize the accident problem for effective diagnosis. Therefore, data collected for the study variables, should be all inclusive and representative of the peculiarities of all segments of the study area. This study used rudimentary techniques to characterize pedestrian accidents. It has also shown the importance of situating the accident investigation to cover all relevant elements of the study domain for meaningful and effective diagnosis of the problem. The method of accident characterization should therefore precede any sophisticated accident investigation method in order to provide insight into the issues for analysis and make informed decisions on intervention strategies. REFERENCES [1]. Afukaar, F. K., The Characteristics of Pedestrian Accidents in Ghana, Bi-Annual Journal of Building and Road Research Institute (Council for Scientific and Industrial Research), Ghana, Vol. 7, 2001, pp. 1 - 4. [2]. Road Traffic Crashes in Ghana, Accident Statistics 2010, Building and Road Research Institute (Council for Scientific and Industrial Research), Kumasi, 2010. [3]. G-Basyonny, K. and Sayed, T., Comparison of Two Negative Binomial Regression Techniques in Developing Accident Prediction Models, Transportation Research Board No 1950, 2006. [4]. Analysis Ch 3 pg 1, Descriptive Analysis, ww.tulane.edu/.../Analysis2/.../pg1%20Descriptive%20analy. [5]. Annual Review Report 2005, Ministry of Roads and Highways, 2006. [6]. Road Condition Report Year 2010, Ghana Highway Authority, Ministry of Roads and Highways, 2011. [7]. Wikipedia, the Free Encyclopedia, en.wikipedia.org/wiki/Descriptive_statistics. [8]. National Road Safety Commission, 2010 Annual Report, 2011. [9]. Traffic Safety Facts 2009 Data, US Department of Transportation, National Highway Traffic Safety Administration, DOT HS 811 394. [10]. Downing, C. S., The Education of Children in Road Safety. Proceedings of the Symposium: The Healthy Community – Child Safety as part of Health Promotion Activities, Stockholm, 1987. [11]. Jacobs, G. and Aeron-Thomas A., Africa Road Safety Review Report, Project Report PR/INT/659/00, Transport Research Laboratory, 2000, pp ii. [12]. Summary of Vehicles Registered in Ghana by Category, Driver Vehicle and Licensing Authority, 2010. [13]. Downing A. J., Pedestrian Safety in Developing Countries, Proceedings of the Vulnerable Road User: International Conference on Traffic Safety; New Dehli, 1991. 1: 4 - 6. [14]. 2010 Population and Housing Census, Summary of Final Results, Ghana Statistical Service, May 2012.