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Traffic
studies
A
Seminar
on
Presented by :
Sachin Nagayach
0108CE13ME42
Guided by :
Pradeep Purohit sir
Asso. Professor
Introduction
Traffic studies are carried out to analyse
the traffic chracteristics . It helps in
geometric design and traffic control,
which tends to a safe and eficient
traffic movement.
The traffic studies for
collection of data is also known as
Traffic Census
TYPES OF TRAFFIC STUDIES
 Traffic volume study
 Speed study
 Origin and destination study
 Traffic flow characteristics study
 Traffic capacity study
 Parking study
 Accident study
Traffic Volume Study
Traffic volume study is the quantity of
vehicles crossing a section of road per
unit time at any selected period.
The uses of traffic studies are as follows
 Planning
 Traffic operation and control
 Traffic pattern
 Structural design of pavement
 Regulatory measures
Methods of volume study
Automatically
Manually
Automatic counters
Automatic counters are also known as
mechanical counters . They can
automatically record the total numbers
of vehicles crossing a section of the
road in desired period of time.
Automatic counters
 Advantage:
It can work throughout the day and night for
desired period, which is impractical in
manual.
 Disadvantage:
It doesnot give the detail of the traffic like
various classes, stream and turning
movement
Automatic counters
Automatic counters
Automatic counters
Automatic counters
Manually
The manually method is the method in
which a group of peoples are trained
to record the total numbers of
vehicles crossing a section of the road
in desired period of time on record
sheets manually.
Manually
 Advantage:
It gives the full detail of the traffic like
various classes, stream and turning
movement etc of the vehicles.
 Disadvantage:
It cannot work throughout the day
and night for all days of year.
Presentation of volume study
data
The data can be presented by following
forms, they are:
 Annual average daily traffic (AADTorADT)
 Trends charts
 Variation charts
 Traffic flow maps
 Volume flow diagram
 Highest hourly volume graph
Speed Studies
The speed studies are the studies
which are carried out to know the
general trends in speeds.
They are classified into two groups:
 Spot speed study
 Speed and delay study
Spot speed study
The speed at any spot is known as spot
speed.
It may used for following aspects:
 Planning traffic control and regulation
 Geometric design
 Accident studies
 Traffic capacity
 Speed trends
Presentation of spot speed
data
Average speed of vehicles
Cummulative speed of
vehicles
Modal average
Speed and delay study
The speed and delay study gives:
 Running speed
 Overall speed
 Fluctuation in speed
 Delay between two station
Methods of speed and delay
study
 Floating car method
 License plate method
 Interview technique method
 Elevated observation method
 Photographic technique method
Origin and Destination Study
This technique is mainly observed by
two methods:
 Plan the road network and other
facilities for vehicular traffic
 Plan the schedule of different modes
of transportation for trip demand
Methods of O and D study
 Road side interview method
 License plate method
 Return postcard method
 Tag on car method
 Home interview method
 Work spot interview method
Traffic Capacity Study
The study of traffic volume and traffic
density is known as traffic capacity
study.
There are three types of capacity study:
 Basic capacity
 Possible capacity
 Practical capacity
Factor affecting traffic
capacity
 Speed of leading and following vehicle
 Type and characteristic of two vehicle
 Driver characteristic of following
vehicle
 Traffic volume capacity ratio
 Proportion of vehicle classes
 Road geometrics
 Environmental factors
Parking studies
parking is the much needed demand
and major problem in our country.
Parking studies are used to evaluate
the facilities available like :
 Parking demand
 Parking characteristics
 Parking space inventory
Types of parking studies
 Onstreet :
◦ Parallel parking
◦ 30˚ angle parking
◦ 45˚ angle parking
◦ 60˚ angle parking
◦ Right angle parking
 Offstreet :
◦ Mechanical car parking
◦ Multistory car parking
◦ Roof car parking
◦ Surface car parking
◦ Underground parking
Accident Study
Accident studies may be listed as:
 To study the cause of accident and
suggest corrective treatment at
nearest location.
 To evaluate existing design
 To support proposed design
 To make computation of financial loss
 To carry out before and after studies
Traffic studies and importance
Accident study record
 Collection of accident data
 Accident report
 Accident record
 Condition diagram
 Collision diagram
 Accident investigation
 Analysis
Causes of Accident
There are four basic elements in traffic
accident:
 Road user
 Vehicle
 Road condition
 Environment factor
Causes of Accident
 Driver
 Pedestrian
 Passenger
 Vehicle defects
 Weather
 Animals
Thanking you

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Traffic studies and importance

  • 1. Traffic studies A Seminar on Presented by : Sachin Nagayach 0108CE13ME42 Guided by : Pradeep Purohit sir Asso. Professor
  • 2. Introduction Traffic studies are carried out to analyse the traffic chracteristics . It helps in geometric design and traffic control, which tends to a safe and eficient traffic movement. The traffic studies for collection of data is also known as Traffic Census
  • 3. TYPES OF TRAFFIC STUDIES  Traffic volume study  Speed study  Origin and destination study  Traffic flow characteristics study  Traffic capacity study  Parking study  Accident study
  • 4. Traffic Volume Study Traffic volume study is the quantity of vehicles crossing a section of road per unit time at any selected period. The uses of traffic studies are as follows  Planning  Traffic operation and control  Traffic pattern  Structural design of pavement  Regulatory measures
  • 5. Methods of volume study Automatically Manually
  • 6. Automatic counters Automatic counters are also known as mechanical counters . They can automatically record the total numbers of vehicles crossing a section of the road in desired period of time.
  • 7. Automatic counters  Advantage: It can work throughout the day and night for desired period, which is impractical in manual.  Disadvantage: It doesnot give the detail of the traffic like various classes, stream and turning movement
  • 12. Manually The manually method is the method in which a group of peoples are trained to record the total numbers of vehicles crossing a section of the road in desired period of time on record sheets manually.
  • 13. Manually  Advantage: It gives the full detail of the traffic like various classes, stream and turning movement etc of the vehicles.  Disadvantage: It cannot work throughout the day and night for all days of year.
  • 14. Presentation of volume study data The data can be presented by following forms, they are:  Annual average daily traffic (AADTorADT)  Trends charts  Variation charts  Traffic flow maps  Volume flow diagram  Highest hourly volume graph
  • 15. Speed Studies The speed studies are the studies which are carried out to know the general trends in speeds. They are classified into two groups:  Spot speed study  Speed and delay study
  • 16. Spot speed study The speed at any spot is known as spot speed. It may used for following aspects:  Planning traffic control and regulation  Geometric design  Accident studies  Traffic capacity  Speed trends
  • 17. Presentation of spot speed data Average speed of vehicles Cummulative speed of vehicles Modal average
  • 18. Speed and delay study The speed and delay study gives:  Running speed  Overall speed  Fluctuation in speed  Delay between two station
  • 19. Methods of speed and delay study  Floating car method  License plate method  Interview technique method  Elevated observation method  Photographic technique method
  • 20. Origin and Destination Study This technique is mainly observed by two methods:  Plan the road network and other facilities for vehicular traffic  Plan the schedule of different modes of transportation for trip demand
  • 21. Methods of O and D study  Road side interview method  License plate method  Return postcard method  Tag on car method  Home interview method  Work spot interview method
  • 22. Traffic Capacity Study The study of traffic volume and traffic density is known as traffic capacity study. There are three types of capacity study:  Basic capacity  Possible capacity  Practical capacity
  • 23. Factor affecting traffic capacity  Speed of leading and following vehicle  Type and characteristic of two vehicle  Driver characteristic of following vehicle  Traffic volume capacity ratio  Proportion of vehicle classes  Road geometrics  Environmental factors
  • 24. Parking studies parking is the much needed demand and major problem in our country. Parking studies are used to evaluate the facilities available like :  Parking demand  Parking characteristics  Parking space inventory
  • 25. Types of parking studies  Onstreet : ◦ Parallel parking ◦ 30˚ angle parking ◦ 45˚ angle parking ◦ 60˚ angle parking ◦ Right angle parking  Offstreet : ◦ Mechanical car parking ◦ Multistory car parking ◦ Roof car parking ◦ Surface car parking ◦ Underground parking
  • 26. Accident Study Accident studies may be listed as:  To study the cause of accident and suggest corrective treatment at nearest location.  To evaluate existing design  To support proposed design  To make computation of financial loss  To carry out before and after studies
  • 28. Accident study record  Collection of accident data  Accident report  Accident record  Condition diagram  Collision diagram  Accident investigation  Analysis
  • 29. Causes of Accident There are four basic elements in traffic accident:  Road user  Vehicle  Road condition  Environment factor
  • 30. Causes of Accident  Driver  Pedestrian  Passenger  Vehicle defects  Weather  Animals