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Study on Traffic-Responsive Metering Algorithm in Baltimore Estimated 3.6 and 8.8 Percent Reduction in Average Travel Time for Trucks and Cars, Respectively, With Local Signal Synchronization.

METHODOLOGY In this study, an open-source mesoscopic traffic network simulation tool was used. The model network was calibrated for the morning peak period using multi-source multi-class traffic data…
Content type
Benefit
Date Posted
03/31/2025
Taxonomy (ARC-IT) Traffic Metering (TM05)
Geolocation links
Baltimore, Maryland, United States

Connected and Automated Vehicle Data-Enhanced Ramp Metering Simulated on Corridor I-210 Reduced Travel Time by 12 Percent, Speed Variations by Five Percent, and Number of Stops on Mainline by 25 Percent.

METHODOLOGY The case study developed queue-informed and incident-aware enhanced ramp-metering algorithms with CAV data. The former enhanced algorithm employed more accurate on-ramp queue estimations…
Content type
Benefit
Date Posted
09/30/2024
Taxonomy (ARC-IT) Performance Monitoring (DM02), ITS Communications (SU07), Vehicle-Based Traffic Surveillance (TM02), Connected Vehicle Traffic Signal System (TM04), Traffic Metering (TM05), Regional Traffic Management (TM07), Traffic Incident Management System (TM08), Speed Harmonization (TM21), Broadcast Traveler Information (TI01), Queue Warning (VS08)
Geolocation links
Los Angeles, California, United States

Integrate Cooperative Automated Transportation Data with Traditional Sensors for Effective Traffic Management During Low Connected and Automated Vehicle Market Penetration.

Key takeaways from the study are listed below. Integrate CAT data with traditional sensors to provide comprehensive traffic management, particularly during the transition period when CAV market…
Content type
Lesson
Date Posted
09/30/2024
Taxonomy (ARC-IT) Performance Monitoring (DM02), ITS Communications (SU07), Connected Vehicle Traffic Signal System (TM04), Traffic Metering (TM05), Regional Traffic Management (TM07), Traffic Incident Management System (TM08), Speed Harmonization (TM21), Broadcast Traveler Information (TI01), Personalized Traveler Information (TI02), Queue Warning (VS08)
Geolocation links
Los Angeles, California, United States

Combined Variable Speed Limit and Ramp Metering System along the Atlanta Beltway Estimated to Reduce Total Travel Time by About Eight Percent.

METHODOLOGY This study proposed a combined VSL-RM algorithm designed to maximize freeway capacity by mitigating the capacity drop phenomenon at merge bottlenecks. The optimal speed of the VSL-RM…
Content type
Benefit
Date Posted
03/22/2023
Taxonomy (ARC-IT) Traffic Metering (TM05), Variable Speed Limits (TM20)
Geolocation links
Atlanta, Georgia, United States

Coordinated Ramp Metering Systems Implemented in California Showed a Delay Reduction of Up to 9 Percent and Travel Time Reliability Improvement of Up to 28 Percent During Peak Periods.

Methodology In the “before” period (September-October 2016) the I-80 corridor did not utilize ramp metering. The “after” (September-November 2018) ramp metering system was a CRM algorithm based on…
Content type
Benefit
Date Posted
10/25/2022
Taxonomy (ARC-IT) Traffic Metering (TM05)
Geolocation links
Alameda County, California, United States   |   Contra Costa County, California, United States   |   Sacramento County, CA
ITS Deployment Evaluation

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its.dot.gov

U.S. Department of Transportation Office of the Assistant Secretary for Research and Technology (OST-R)
 
 
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