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Rapid deployment of DSRC for connected vehicles can save thousands of lives, regardless of whether a later transition to C-V2X proves advantageous.

FINDINGS   The baseline scenario for the analysis assumed that a decision to wait for C-V2X would result in a delay of 5 years (3-year and 7-year delays are also analyzed). For the 5-year…
07/23/2018
Taxonomy: In-Vehicle Systems, Collision Avoidance, Intersection Collision Warning, Road Geometry Warning, Weather Warning, Adaptive Cruise Control, Safety & Security, Intelligent Speed Control, Lane Keeping Assistance, Navigation / Route Guidance, Platooning, In-Vehicle Systems, In-Vehicle Systems, In-Vehicle Systems, In-Vehicle Systems

Applications that recommend optimal speeds for specific road segments can yield emissions and fuel consumption savings of 5.3 percent and 11.6 percent, respectively, for cars.

FindingsSimulation results verify the fuel consumption and emissions benefits of this application when vehicles traveling in nodes respect the optimal speed. Use of the application and the optimal…
07/31/2017
Taxonomy: In-Vehicle Systems, Connected Eco-Driving

The Safe Green Passage application using the Multipath Signal Phase and Timing (SPaT) broadcast message to inform drivers revealed that as travel demand increased, the benefits of the application decreased.

MethodologyIn a field demonstration performed on August 8, 2011, SPaT information was sent from the signal controller by cellular and Dedicated Short Range Communications (DSRC) radios and was…
01/26/2017
Taxonomy: In-Vehicle Systems, Traffic Control

Intelligent advanced warnings of end-of-green at signalized intersections led to more stopping and milder deceleration compared to no warnings.

MethodologyStudies were conducted using driving simulators comparing six types of roadway or in-vehicle warnings with a no-warning control condition. Using multilevel modeling, the study tested…
10/28/2016
Taxonomy: In-Vehicle Systems, Traffic Control Violation Warning

Simulation models show that real-time on-board driver assistance systems that recommend proper following distances can improve fuel economy by approximately 10 percent.

FINDINGS In general, the modeling effort indicated that predictive control systems can improve fuel economy. Average results from different vehicles under different conditions indicated the system…
08/24/2010
Taxonomy: In-Vehicle Systems, Vehicle Diagnostics, Intelligent Speed Control, In-Vehicle Systems
ITS Deployment Evaluation

INTELLIGENT TRANSPORTATION SYSTEMS JOINT PROGRAM OFFICE

1200 New Jersey Avenue, NE
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1-800-853-1351

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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