The use of cine, video and still photography in aerial parking surveys, urban congestion studies, using the moving observer method, and origin and destination surveys is discussed. Technical details of the parking surveys and the helicopter/video recording techniques are given in two appendices. The aerial surveys described have been successful and were economically competitive with ground methods in specific cases. Although a helicopter was used in the initial parking survey, a light aircraft has been subsequently used most successfully. Video recordings, tracking the progress of a marked car produced accurate results when compared with ground timings. The technique was further developed to track cars selected at random along the selected routes. One of the basic problems of carrying out origin and destination surveys by aerial photography is the practical difficulty of maintaining station over a particular ground area for long periods. However it was found that a ten minute sample could give a 10 per cent accuracy at peak periods. It is concluded that aerial survey techniques have significant advantages when comprehensive coverage of a large area is needed, where a short time sample can be taken and where complex or multiple observations are required. (TRRL)

  • Supplemental Notes:
    • Conference on Traffic Data Collection, Leeds University, January 8-9, 1979.
  • Corporate Authors:

    University of Leeds

    Department of Civil Engineering
    Leeds, West Yorkshire  United Kingdom  LS2 9JT
  • Authors:
    • Wyborn, J H
  • Publication Date: 1979

Media Info

  • Features: Figures;
  • Pagination: 19 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00335295
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Nov 23 1981 12:00AM