Estimating the Impacts of Automatic Emergency Braking (AEB) Technology on Traffic Energy and Emissions

As one of the key advances in vehicle safety, Automatic Emergency Braking (AEB) has been introduced in the U.S. approximately a decade ago and the number of vehicles equipped with this technology has increased significantly. There have been a number of studies showing that this technology is capable of reducing the number and severity of rear-end crashes and has helped to reduce the number of traffic fatalities. Most of these studies have evaluated this technology at the vehicle level. Very few have attempted to quantify its effectiveness on the traffic system as a whole, especially on the impacts of energy consumption and tailpipe emissions. To address this gap, the research team proposes herein to evaluate the impacts of Automated Emergency Braking from the traffic operation perspective. This research will: 1) build a structured database based on the real-world traffic state measurements, traffic accident records (focusing on rear-end crashes), roadway geometry, and weather information (if available); 2) identify the relationship between the implementation of AEB and the reduction of rear-end crashes; 3) develop a statistical model that can quantify the environmental impacts caused by rear-end crashes; and 4) perform a case study to estimate AEB-induced effectiveness on traffic energy consumption and pollutant emissions. The research results are expected to: 1) better understand the impacts of AEB on mitigating rear-end crash induced environmental impacts; 2) help improve the transportation system’s resilience; and 3) inform the policy makers of the potentials of AEB application, which may help approach some regulatory goal, e.g., Vision Zero.


    • English


    • Status: Active
    • Funding: $99,995.00
    • Sponsor Organizations:

      Department of Transportation

      1200 New Jersey Avenue, SE
      Washington, DC  United States  20590
    • Managing Organizations:

      METRANS Transportation Center

      University of Southern California
      Los Angeles, CA  United States  90089-0626
    • Project Managers:

      Brinkerhoff, Cort

    • Performing Organizations:

      University of California, Riverside

      1084 Columbia Ave.
      Riverside, CA  United States  92507
    • Principal Investigators:

      Wu, Guoyuan

    • Start Date: 20200115
    • Expected Completion Date: 20210114
    • Actual Completion Date: 0
    • USDOT Program: University Transportation Centers

    Subject/Index Terms

    • TRT Terms: Safety analysis; Vehicle capacity
    • Subject Areas: Environment; Research; Safety and Human Factors; Security and Emergencies; Transportation (General);

    Filing Info

    • Accession Number: 01732419
    • Record Type: Research project
    • Source Agency: METRANS Transportation Center
    • Files: RIP
    • Created Date: Feb 28 2020 1:15PM