Walking (in 1971) has an energy intensity of 1,380 Btu/passenger mile (PM) and a labor intensity of 0.75 jobs/million PM. Additional food requirements to sustain the body while walking account for the direct energy cost and 10.4% of the total energy cost. An average walker, for purposes of this study, weighs 130-150 lbs., walks on a level surface at 2.17 mph, and consumes 3.3 calories or 13.2 Btu's per minute. Indirect costs include shoes, which measure 345 Btu/PM and .75 jobs/million PM. Walkways and the complexities of the human body cannot be meaningfully measured in this context. Bicycles, because of increased physiological efficiency, are a slightly more efficient (1, 340 Btu/PM) transportation system than walking. Appendixes include calorimetric measurements and analyses of footwear costs. (DCK)

  • Corporate Authors:

    Government Printing Office

    Superintendent of Documents
    Washington, DC  United States  20402-9325
  • Authors:
    • Penner, P S
  • Publication Date: 1976-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00138172
  • Record Type: Publication
  • Report/Paper Numbers: #1060
  • Files: TRIS
  • Created Date: Aug 23 1976 12:00AM