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www.gao.gov/GAO-09-153R - Cached - Annotated View

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bmevans
Bmevans bookmarked on 2008-11-20 gas oil barrels energy cars speed limit consumption savings us policy

Review of literature and experts by a government agency. Produces a report on the myriad factors that would influence actual gas savings on a national speed limit.

  • In response to the request, we reviewed existing literature and consulted knowledgeable stakeholders on the following: (1) What is the relationship between speed and the fuel economy of vehicles? (2) How might reducing the speed limit affect fuel use?
  • there is no single speed that optimizes fuel economy for all vehicles
  • peed that optimizes fuel economy for all vehicles. Optimal speed for fuel economy for individual vehicles ranges widely, but is generally between 30 and 60 mph, depending on a vehicle's characteristics. However, a vehicle's fuel economy also depends on other factors besides air resistance. Factors that enhance
  • electronic and computer controls,
  • engine efficiency enhancement
  • transmissions, and hybrid technology
  • offset by increases in vehicle weight, performance, and accessory loads.
  • Lowering speed limits can potentially reduce total fuel consumption
  • consistent with estimates of the impact of the past national speed
  • 175,000 to 275,000 barrels of oil per day
  • rivers' compliance with a reduced speed limit
  • Moreover, a national speed limit would not affect many of the miles driven in the United States, such as those in urban areas, where most vehicles are already traveling at lower speeds due to lower speed limits or congestion
  • weather conditions
  • road conditions

This link has been bookmarked by 1 people . It was first bookmarked on 20 Nov 2008, by Brynn Evans.

  • 20 Nov 08
    bmevans
    Brynn Evans

    Review of literature and experts by a government agency. Produces a report on the myriad factors that would influence actual gas savings on a national speed limit.

    gas oil barrels energy cars speed limit consumption savings us policy

    • In response to the request, we reviewed existing literature and consulted knowledgeable stakeholders on the following: (1) What is the relationship between speed and the fuel economy of vehicles? (2) How might reducing the speed limit affect fuel use?
    • there is no single speed that optimizes fuel economy for all vehicles
    • 12 more annotations...