1. FHWA
Roadway Safety Data Program
Webinar for FHWA Safety Field
February 26, 2013
1

2. Benefits of Safety Data
2
• Use of integrated roadway, traffic, and crash
data in analysis can lead to more efficient
use of funds and improved safety
Improved
Safety
Outcomes
Better
Targeted
Safety
Investment
s
More
Informed
Decision
Making
Improved
Data
Collection

3. MAP-21 - Safety Data Systems
• States shall have in place a safety data system
sufficient to guide the Highway Safety
Improvement Program (HSIP) and Strategic
Highway Safety Plan (SHSP) processes.
3

4. MAP-21 Guidance
• Types of roadways covered
• Types of data included
• Geolocation of safety data to a common highway
basemap
• Analysis and evaluation capabilities
• Subset of Model Inventory of Roadway Data
Elements to be collected (referred to as the MIRE
Fundamental Data Elements)
4

5. System Requirements:
Types of Roads
• HSIP applies to all public roads
• Data to be collected for all public roads, including:
– State owned/maintained roads
– Non State owned/maintained roads
– Roads on tribal lands
– Public roads on Federal lands
5

6. System Requirements:
Types of Data
• Safety data to be collected includes:
– Crash data
– Roadway data
– Traffic data
– At RR grade crossings, highway and train traffic
• Identify fatalities and serious injuries on all public
roads by location
• Diverse data sets should be able to be linked or
integrated
6

7. System Requirements:
Geolocation of Safety Data
• Crash, roadway and traffic data should be linkable
by geolocation to a basemap that is inclusive of all
public roads within a State.
• August 7 2012, Memorandum on Geospatial
Network for All Public Roads requires states to
update LRS networks to include all public roads by
June 15, 2014
7

8. System Requirements:
Analysis and Evaluation Capabilities
• Ability to perform problem ID and countermeasure analysis
• ID hazardous locations
• Develop strategic and performance based safety goals
• Advance State capabilities for data collection, analysis and
integration
• Determine priorities and schedules for correction of
hazardous locations and conditions
• Establish an evaluation process to assess results achieved
by safety projects
8

9. Subset of Model Inventory of Roadway
Elements (MIRE) to be Collected
• MAP-21 required the establishment of a subset of
MIRE elements that are useful for roadway safety
• Subset enables jurisdictions to analyze crash
experience of roadway networks relative to the
expected average crash frequency given roadway
and traffic characteristics at specific locations
9

10. Subset of Model Inventory of Roadway
Elements (MIRE) to be Collected – Cont.
• For roads > 400 AADT subset includes:
– Road segment elements
– Intersection elements
– Interchange/ramp elements
• For roads < 400 AADT subset includes:
– Road segment elements
– Intersection elements
10

11. Subset of MIRE for Roads > 400 AADT
Roadway Segment
• Segment Identifier
• Route Number
• Route/street Name
• Federal Aid/Route Type
• Rural/Urban Designation
• Surface Type
• Begin Point Segment
Descriptor
• End Point Segment
Descriptor
• Segment Length
• Direction of Inventory
• Functional Class
• Median Type
• Access Control
• One/Two-Way Operations
• Number of through lanes
• AADT
• AADT Year
• Type of Governmental
Ownership
11

12. Subset of MIRE for Roads > 400 AADT
Intersection
• Unique Junction Identifier
• Location Identifier for Road 1
Crossing Point
• Location Identifier for Road 2
Crossing Point
• Intersection/Junction
Geometry
• Intersection/Junction Traffic
Control
• AADT [for each Intersection
Road]
• AADT Year [for each
Intersecting Road]
12

13. Subset of MIRE for Roads > 400 AADT
Interchange/Ramp
• Unique Interchange
Identifier
• Location Identifier for
Roadway at Beginning
Ramp Terminal
• Location Identifier for
Roadway at Ending Ramp
Terminal
• Ramp Length
• Roadway Type at Beginning
Ramp Terminal
• Roadway Type at Ending
Ramp Terminal
• Interchange Type
• Ramp AADT
• Year of Ramp AADT
• Functional Class
• Type of Governmental
Ownership
13

14. Subset of MIRE for Roads < 400 AADT
Roadway Segment
• Segment Identifier
• Functional Class
• Surface Type
• Type of Governmental
Ownership
• Number of Through Lanes
• AADT
• Begin Point Segment
Descriptor
• End Point Segment
Descriptor
• Rural/Urban Designation
Intersection
• Unique Junction Identifier
• Intersection/Junction
Geometry
• Location Identifier for Road
1 Crossing Point
• Location Identifier for Road
2 Crossing Point
• Intersection/Junction Traffic
Control
14

15. MAP-21 Eligible Safety Data Collection,
Analysis, and Improvement Activities
• “Highway safety improvement projects are
defined as strategies, activities and projects on a
public road that are consistent with a State’s SHSP
and correct or improve a hazardous road location
or feature or address a highway safety problem.”
• Collection, analysis and improvement of safety
data is specifically identified as an eligible project
within the definition of a HSIP
15

16. Complementary Processes
• MAP-21 specifies that State efforts to advance
their capabilities for safety data collection,
analysis and integration be conducted in a
manner complements the Highway Safety Plan
(NHTSA) and the Commercial Vehicle Safety Plan
(FMCSA).
• The State TRCC
• The State’s Traffic Records Strategic Plan
– MIRE FDE Implementation Plan
16

17. State Safety Data Guidance Links
• Guidance on State Safety Data Systems
http://www.fhwa.dot.gov/map21/guidance/guidesafety
data.cfm
• Question & Answer on State Safety Data Systems
http://www.fhwa.dot.gov/map21/qandas/qassds.cfm
17

18. Roadway Safety Data Program
• Roadway Safety Data Capability Assessment
• Model Inventory of Roadway Elements (MIRE)
Management Information System (MIS)
• Safety Data Technical Assistance Programs
• Benefit-Cost Analysis Methodology for Safety Data
Investments
• Highway Safety Manual (HSM) Implementation
Support
18http://safety.fhwa.dot.gov/rsdp/
Contact:
Ray Krammes

19. Roadway Safety Data Capabilities
Assessment
• Individual State assessments: State Action Plans
• National assessment: Final Report
• 4 peer exchanges:
– Help States refine and implement Action Plans
– Identify States’ priorities for national action
19http://safety.fhwa.dot.gov/rsdp/
Contact:
Esther Strawder

20. States’ Priorities for National Action
Data Collection
• Noteworthy practices
• Case studies
• MAP-21 FDE guidance
• Data on local roads
• Technical assistance
• Value of data improvements
Data Analysis
• Value of good analysis
• Noteworthy practices
• Training
Data Management
• Guidance on data
integration
• Value of good data
management practices
• Glossary of terms
• Noteworthy practices
Data Interoperability
• Noteworthy TRCC practices
• Value of linking data
• Data “Focus States”
• Training
20

21. Model Inventory of Roadway Elements
• MIRE Version 1.0: Listing & definition of elements
• MIRE Management Information System
– MIRE MIS structure
– Performance measures for MIRE data
– MIRE element collection mechanisms
– MIRE intersection data extraction methods
– Application of “collective information” to MIRE data
21http://safety.fhwa.dot.gov/rsdp/
Contact:
Bob Pollack

22. Safety Data Technical Assistance
• Crash Data Improvement Program
• Roadway Data Improvement Program
• Roadway Data Extraction Technical Assistance
Program (planned)
• “Flexible” Technical Assistance (Planned)
22http://safety.fhwa.dot.gov/rsdp/
Contact:
Bob Pollack

23. Benefit-Cost Analysis Methodology for
Safety Data Investments
• Costs
– Data collection
– Data base operations and maintenance
– Locating and coding crashes
– Data storage
• Benefits
– Reduced staff time from:
• More efficient project identification
• Streamlined evaluation
– Crash savings from:
• Faster project programming
• Improved project prioritization
23http://safety.fhwa.dot.gov/rsdp/
Contact:
Stuart Thompson

24. HSM Implementation Support
• Resources
–HSM Implementation Guide for Managers
–HSM Integration Guide
–HSM Case Studies
–HSM Training Guide
–SPF Development/Calibration Guide
• Tools
–Systemic Project Selection Tool
–IHSDM
–CMF Clearinghouse
• Training (NHI & Resource Center)
• Technical assistance
24http://safety.fhwa.dot.gov/rsdp/
Contact:
Mshadoni Smith

25. New Efforts
• Case Studies of Noteworthy Roadway Safety Data
and Analysis Practices
• Toolbox of Resources to Improve States’ Roadway
Safety Data and Analysis Practices
• Good Practices Guide and Pilots of Integrating
State and Local Roadway Safety Data
• Business Case for Roadway Safety Data and
Analysis Improvements
25