A procedure was developed that can be used to estimate vehicle mix and volumes on county roads in Arizona. The methdology involves short visual sampling periods for rapid and economical estimates. Included are recommendations for updating and maintaining the data base. Expansion factors were developed from field data collections and the data base provided by the Automatic Traffic Recorders located on elements of the State Highway Systems. Results show that a great deal of consistency exists on roads regardless of classification relative to hourly, weekly, and monthly factors. Vehicle mix, as a percentage of volume, is independent of volume and road classification.

  • Corporate Authors:

    Arizona State University, Tempe

    Center for Advanced Research in Transportation
    Tempe, AZ  United States  85287

    Arizona Department of Transportation

    206 South 17th Avenue
    Phoenix, AZ  United States  85007

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Matthias, J S
    • Dean, A G
  • Publication Date: 1984-6

Media Info

  • Pagination: 38 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00619187
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/AZ/84/195
  • Contract Numbers: 1-23(195)
  • Created Date: Feb 29 1992 12:00AM