Model Inventory of Roadway Elements (MIRE) GIS-T Annual Conference March 30, Robert Pollack FHWA

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1 Model Inventory of Roadway Elements (MIRE) GIS-T Annual Conference March 30, 2011 Robert Pollack FHWA

2 What is MIRE? Model Inventory of Roadway Elements Listing of roadway and traffic elements critical to safety management Provides data dictionary elements, definitions, attributes, etc Similar to Model Minimum Uniform Crash Criteria (MMUCC) but for roadway and traffic data.

3 What is the Role of MIRE? Provide the guidance needed to: Improve roadway and traffic data inventories. Support safety programs and safety information systems. Define good inventory data and move toward the use of performance measures. Support States Highway Safety Improvement Programs (HSIP).

4 Support for the Highway Safety Improvement Program HSIP is the main FHWA safety program HSIP is to be a data driven program Objective of HSIP is to reduce fatalities and serious injuries from crashes on public roads States must develop a Strategic Highway Safety Plan (SHSP)

5 HSM - Data Support Program Highway Safety Manual (HSM) is intended to provide a science-based technical approach to improving safety performance HSM provides analytic tools to assist state and local jurisdictions in conducting quantitative safety analyses and program/project evaluation

6 HSM Data Support Program Provides analytic tools and techniques for quantifying the potential effects on crashes as a result of planning, design and operational decisions HSM relies on the ability to integrate crash data with roadway characteristic and traffic data

7 Why MIRE? Collection of MIRE will provide roadway and traffic data that can be merged with crash data to enhance data analysis capabilities. The merged data sets will allow states to: Develop relationships of safety (crash occurrence and severity) to roadway features and user exposure. Evaluate the effectiveness of safety treatments. Better identify location and characteristics of crashes. Better determine appropriate countermeasures and strategies.

8 What is included in MIRE? 202 elements divided into three categories: Roadway segments Roadway alignments Roadway junctions Each element includes: Definition List of attributes (coding) Priority rating How it relates to elements in HPMS and new safety tools (SafetyAnalyst, HSM)

9 Data Element Example 129. Intersecting Angle Definition: The measurement in degrees of the smallest angle between any two legs of the intersection. This value will always be within a range of 0 to 90 degrees. Attributes: Degrees Priority: Critical HPMS/Tool Requirements: HSM/IHSDM (Required)

10 Benefits of MIRE Make it easier to collect, store, and use all types of data. Standardized coding States can compare and analyze data across jurisdictions and across States. Crash, roadway, traffic data on same referencing system. Link safety data to non-safety data include roadway and traffic data in analysis.

11 Benefits of MIRE Support States Highway Safety Improvement Programs (HSIP). Enhance problem identification and countermeasure selection (efficient use of funds). Ability to use new generation of safety tools Highway Safety Manual SafetyAnalyst

12 MIRE Benefits: Enhanced Problem Identification High-priority intersections Analyze crash rates within intersection categories Example Identify most hazardous signalized intersections with entering volumes between X and Y High-priority horizontal curves Analyze by crash rate within roadway class Example Identify most hazardous curves on two-lane rural roads

13 MIRE Benefits: Enhanced Targeting of Specific Treatments Identify where treatments will be most effective at reducing crashes Treatment : Chevrons or advanced pavement markings Horizontal curves, on Two-lane rural roads, with Speed limit of 55, and Degree of curve greater than 10 degrees

14 Benefits of MIRE Beyond Safety Benefit for: Decision Makers Asset Management Infrastructure Operations Maintenance Provide information about roads and/or link with other data they might otherwise not have access to Better data, improved decision making.

15 Next Steps Release Final MIRE Version 1.0 Report (October 2010). Develop and test MIRE Management Information System (MIRE MIS). Select Pilot Agencies and provide support as needed.

16 MIRE Management Information System (MIRE MIS) Data management system Process for data handling and storage Linkage among files Mechanisms for data collection Performance metrics

17 Opportunities for User Feedback Discussion Forum Webconference Presentations FAQs Resources

18 Contact Information FHWA Contacts Robert Pollack, Carol Tan,