Study Details

Study Title: Developing Florida-specific Mobility Enhancement Factors (MEFs) and Crash Modification Factors (CMFs) for TSM&O Strategies

Authors: Alluri et al.

Publication Date:MAR, 2020

Abstract: Transportation Systems Management and Operations (TSM&O) focus on improving the safety and operational performance of the transportation network by integrating proven transportation management strategies and Intelligent Transportation Systems (ITS) applications. The Florida Department of Transportation (FDOT) has been a pioneer in adopting TSM&O strategies to improve safety and mobility of Florida's roadways. The primary goal of this research was to develop resources that can assist FDOT and other agencies in evaluating the effectiveness of the deployed TSM&O strategies. This research focused on quantifying the mobility and safety benefits of the following TSM&O strategies: ramp metering systems, dynamic message signs (DMSs), Road Rangers, express lanes, transit signal priority (TSP), and adaptive signal control technology (ASCT). The operational performance of the aforementioned strategies was evaluated using mobility performance measures such as travel time, travel time reliability, average speed adjustment, incident clearance duration, etc. Safety benefits were evaluated using the crash occurrence risk, secondary crash occurrence risk, and crash frequency as the performance measures. In general, all the evaluated TSM&O strategies were found to have resulted in safety and mobility improvements. The study results were incorporated into a spreadsheet application, the TSM&O Strategies Assessment Tool. The Tool was developed to automatically estimate the safety and mobility benefits of deploying the studied TSM&O strategies. The developed resources will enable FDOT and local agencies to prioritize TSM&O strategies using quantifiable safety and mobility metrics.

Study Citation: Alluri, P., T. Sando, C. Kadeha, H. Haule, J. Salum, M. S. Ali, J. Kodi, and A. Kitali. "Developing Florida-specific Mobility Enhancement Factors (MEFs) and Crash Modification Factors (CMFs) for TSM&O Strategies." . Florida Department of Transportation. Tallahassee, Florida, (March 2020).

Study Report: Download the Study Report Document

CMFs Associated With This Study

Category: Advanced technology and ITS

Countermeasure: Install ramp meter

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.59413 StarsAllAllPrincipal Arterial InterstateUrban

Category:Intersection traffic control

Countermeasure: Install adaptive traffic signal control

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.9485.24 StarsAllAllPrincipal Arterial Other
0.87812.24 StarsRear endAllPrincipal Arterial Other
0.9584.24 StarsAllK,A,B,CPrincipal Arterial Other
0.9435.74 StarsAllOPrincipal Arterial Other


Countermeasure: Implement transit signal priority

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.88124 StarsAllAllPrincipal Arterial OtherUrban
0.86144 StarsAllK,A,B,CPrincipal Arterial OtherUrban
0.9284 StarsAllOPrincipal Arterial OtherUrban