AUTOMOBILE BRAKING ENERGY, ACCELERATION AND SPEED IN CITY TRAFFIC

Speed-time data obtained in two large-scale studies by following randomly selected vehicles in a number of cities with an instrumented car are analyzed here by dividing the data into trip segments between successive stops and computing values of traffic variables for the individual trip segments. The amount of energy dissipated in braking is largely determined by the energy used to accelerate the vehicle, suggesting that drivers do not currently reduce braking in order to save fuel. Traffic characteristics in different metropolitan areas are compared based on the computed traffic variables. Acceleration distribution at different speeds are computed.

  • Supplemental Notes:
    • From SAE Meeting held June 9-13, 1980.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Wasielewski, P
    • Evans, Leonard
    • Chang, M F
  • Publication Date: 1980

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00331764
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SAE 800795
  • Files: TRIS
  • Created Date: Jul 9 1981 12:00AM