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Simulation Results Revealed a V2I-based Speed Advisory System Increased the Minimum Time to Collision by an Average of 1.2 Seconds.

METHODOLOGY This study examined the effects of varying levels of SAS MPR (0%, 25%, 50%, 75%, 100%) on rear-end collision risks. Real vehicle trajectories, vehicle lengths, and signal timing were…
Content type
Benefit
Date Posted
03/24/2023
Taxonomy (ARC-IT) Speed Warning and Enforcement (TM17), Intersection Safety Warning and Collision Avoidance (VS13)
Geolocation links
Atlanta, Georgia, 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

In Atlanta, the cost to purchase, install, configure, and support 600 RSUs for DSRC SPaT/MAP applications was estimated at $2,490,000 (FY2018).

This presentation provided an update of Georgia DOT (GDOT) Operational SPaT (Signal Phase and Timing) Deployments implemented as part of the nationwide SPaT Challenge sponsored by AASHTO. The…
Content type
System Cost
Made Public Date
10/30/2018
Taxonomy (ARC-IT) Vulnerable Road User Safety (VS12), Emissions Monitoring (ST01), Eco-Traffic Signal Timing (ST02), Eco-Traffic Metering (ST03), Eco-Approach and Departure at Signalized Intersections (ST08), Connected Vehicle Traffic Signal System (TM04), Infrastructure Enhanced Cooperative Adaptive Cruise Control (VS15), V2V Basic Safety (VS02), Intersection Safety Warning and Collision Avoidance (VS13), Transit Pedestrian Indication (PT11), Dynamic Roadway Warning (TM12)
Geolocation links
Atlanta, Georgia, United States

Collect traffic and travel time data from all traffic lanes because travel times can vary substantially between lanes.

Collect traffic and travel time data from all traffic lanes because travel times can vary substantially between lanes. Travel time differentials exist across freeway work zone travel lanes, which…
Content type
Lesson
Date Posted
01/08/2018
Taxonomy (ARC-IT) Infrastructure-Based Traffic Surveillance (TM01), Integrated Decision Support and Demand Management (TM09)
Geolocation links
Atlanta, Georgia, United States

HOT lane conversion improved travel times during peak periods and influenced 49 percent of new I-85 Xpress bus riders to start using transit.

FINDINGS The first year of the Express Lanes produced mixed results. During peak periods, travel times and speeds improved in the Express Lanes but declined in general purpose lanes, with a…
Content type
Benefit
Date Posted
05/15/2017
Taxonomy (ARC-IT) HOV/HOT Lane Management (ST06), Electronic Toll Collection (TM10), Road Use Charging (TM11)
Geolocation links
Atlanta, Georgia, United States

Continue to promote carpooling and transit services during an incremental deployment of Express Toll lanes.

The size and scope of the Atlanta CRD projects is reflected in the lessons learned from the project, which are also broad in size and scope. Operation of HOT Lanes Frequently communicate Express…
Content type
Lesson
Date Posted
05/15/2017
Taxonomy (ARC-IT) Road Use Charging (TM11), Electronic Toll Collection (TM10), HOV/HOT Lane Management (ST06), Integrated Decision Support and Demand Management (TM09), Transit Stop Request (PT15), Route ID for the Visually Impaired (PT16), Shared Use Mobility and Dynamic Ridesharing (TI06)
Geolocation links
Atlanta, Georgia, United States

Transit improvements, carpooling campaign, and HOV to HOT conversion demonstration project cost $70,460,779 for capital and $55,896,725 for ongoing maintenance.

Deteriorating performance of the high occupancy vehicle (HOV) lanes on I-85 during peak periods as a result of heavy usage provided the focus of the Atlanta congestion reduction demonstration…
Content type
System Cost
Made Public Date
02/14/2017
Taxonomy (ARC-IT) Electronic Toll Collection (TM10), Road Use Charging (TM11), HOV/HOT Lane Management (ST06), Integrated Decision Support and Demand Management (TM09), Transit Stop Request (PT15), Route ID for the Visually Impaired (PT16), Shared Use Mobility and Dynamic Ridesharing (TI06)
Geolocation links
Atlanta, Georgia, United States

Deployment of freeway congestion pricing system in 5 major U.S. metropolitan areas estimated to cost $1.8 billion

Content references source material no longer available at its original location.
Growing congestion on metropolitan highway networks poses a substantial threat to the U.S. economy and to the quality of life of millions of Americans. Congestion pricing – sometimes called value…
Content type
System Cost
Made Public Date
08/30/2014
Taxonomy (ARC-IT) Road Use Charging (TM11)
Geolocation links
Atlanta, Georgia, United States   |   Los Angeles, California, United States   |   San Francisco, California, United States   |   Washington, District of Columbia, United States   |   Chicago, Illinois, United States

The benefits of multidisciplinary TIM operations yielded an annual reduction in average incident duration of 46 minutes and in secondary crashes of 69 percent in Atlanta Georgia.

FINDINGSA Case Study in Atlanta, Georgia reported the following benefits:Reduction in Average incident durations from 67 to 21 minutes.Reduction in Vehicle-hours of delay of 7.25 million over one…
Content type
Benefit
Date Posted
10/03/2013
Taxonomy (ARC-IT) Vehicle Emergency Response (PS05)
Geolocation links
Atlanta, Georgia, United States

Annual boardings for the I-85 Xpress bus service increased seven percent, more than twice as fast as Xpress bus services in other areas of the city after HOT lanes were implemented to address congestion on I-85 in Atlanta.

Content references source material no longer available at its original location.
METHODOLOGYEvaluation data were collected before and after the conversion to assess impacts on commuters, stakeholders, agency operations, and the environment. "Before" data were collected from…
Content type
Benefit
Date Posted
10/02/2013
Taxonomy (ARC-IT) Road Use Charging (TM11)
Geolocation links
Atlanta, Georgia, United States
ITS Deployment Evaluation

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its.dot.gov

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