In Part 1 the background to the system and its operation were explained; in this article, the methods used to evaluate the system are described and some of the results given. The trial site was located at the junction of Victoria Street, Buckingham Palace Road and Grosvenor gardens, London. An automated system is described which involved using a special pattern of loops laid in the road, and the fitting of two vehicle units to each of some red arrow buses together with a specially-designed logic system. The operational details of the equipment and the systems installation is described. During the trial, which spanned approximately eight months, experience of some 35000 equipment-hours was gained on the roadside equipment and almost 105000 equipment-hours on the vehicle units. Sixteen thousand bus trips through the sites were analysed, which resulted in 155000 vehicle unit operations and 140000 roadside equipment operations. The results obtained from the trial are discussed, together with those obtained from other evaluation tests such as the maximum capabilities of the equipment in terms of the size of loop, the performance of the vehicle units and the ability of the roadside equipment to reject unwanted interference signals. The author concludes that although there were some minor problems, the overall assessment was that the system was suitable for adoption as a standard for bus detection. /TRRL/

  • Availability:
  • Corporate Authors:

    Printerhall Limited

    29 Newmart Street
    London W1P 3PE,   England 
  • Authors:
    • Dow, I M
  • Publication Date: 1977-2


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00156447
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analtyic
  • Files: ITRD, TRIS
  • Created Date: Oct 13 1977 12:00AM