FHWARoadway Safety Data Program
Webinar for FHWA Safety FieldFebruary 26, 2013
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Benefits of Safety Data • 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
Investments
More Informed Decision Making
Improved Data
Collection
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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.
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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)
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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
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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
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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
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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
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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
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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
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Subset of MIRE for Roads > 400 AADTRoadway 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
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Subset of MIRE for Roads > 400 AADTIntersection• 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]
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Subset of MIRE for Roads > 400 AADTInterchange/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
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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
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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
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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
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State Safety Data Guidance Links• Guidance on State Safety Data Systems
http://www.fhwa.dot.gov/map21/guidance/guidesafetydata.cfm
• Question & Answer on State Safety Data Systemshttp://www.fhwa.dot.gov/map21/qandas/qassds.cfm
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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
http://safety.fhwa.dot.gov/rsdp/Contact:Ray Krammes
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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
http://safety.fhwa.dot.gov/rsdp/Contact:Esther Strawder
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States’ Priorities for National ActionData Collection• Noteworthy practices• Case studies• MAP-21 FDE guidance• Data on local roads• Technical assistance• Value of data improvementsData Analysis• Value of good analysis• Noteworthy practices• Training
Data Management• Guidance on data integration• Value of good data
management practices• Glossary of terms• Noteworthy practicesData Interoperability• Noteworthy TRCC practices• Value of linking data• Data “Focus States”• Training
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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
http://safety.fhwa.dot.gov/rsdp/Contact:Bob Pollack
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Safety Data Technical Assistance• Crash Data Improvement Program• Roadway Data Improvement Program• Roadway Data Extraction Technical Assistance
Program (planned)• “Flexible” Technical Assistance (Planned)
http://safety.fhwa.dot.gov/rsdp/Contact:Bob Pollack
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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
http://safety.fhwa.dot.gov/rsdp/Contact:Stuart Thompson
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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
http://safety.fhwa.dot.gov/rsdp/Contact:Mshadoni Smith
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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