Automatic traffic counters are used for on-going studies involving regular monitoring of traffic flows. The counters are rotated regularly among a number of sites throughout the year. Local authorities frequently use this sort of procedure to obtain estimates of annual flow on a network of roads. In this report, several methods of deriving these estimates are examined. Recommendations are given for the most appropriate counting schedules and a simple method of assessing the accuracy of the estimates is provided.(a) (TRRL) extension cables, windscreens and calibration equipment normally supplied with portable sound level meters. The guide describes the application of sound level meters under various environmental and physical conditions, in order that measurements will be reproducible and comparable.

  • Corporate Authors:

    Transport and Road Research Laboratory (TRRL)

    Wokingham, Berkshire  United Kingdom 
  • Authors:
    • Phillips, G
  • Publication Date: 1979

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 24 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00319210
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Report/Paper Numbers: TRRL SR515 Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Feb 6 1981 12:00AM