TRAM AND BUS PRIORITY AT ROAD CROSSINGS. PART 1: MOTIVES AND DEVELOPMENT

Methods are discussed which ensure adequate priority for trams and buses at intersections without imposing noticeable aggregate (the sum of the individual delays to every vehicle using an intersection; its magniu de is a measure of the "impact" of that intersection on the traffic flow) prime losses for other traffic. Examples in Belgium and England are described where the priority facility is not built into conventional traffic light regulated crossings, and ordinary traffic lights are used to secure a clear passage across what woulc otherwise be an unregulated crossing. Operations in Powell Street, San Francisco, and plough- operated switches in conduits in London are also described. Various aspects of priority and aggregate delay are considered, and it is noted that although considerable time savings are possible for public transport vehicles at most crossings, considerably better results for public transportation may be achieved if a slight increase in the aggregage delay to other traffic is permitted. The detection of approaching public transport vehicles by a loop mechanism, and a system that allows specific identification of vehicles are described.

  • Corporate Authors:

    Light Railway Transport League

    64 Grove Avenue, Hanwell
    London W7 3ES,   England 
  • Authors:
    • Van DAM, F
  • Publication Date: 1976-1

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Filing Info

  • Accession Number: 00134026
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 23 1981 12:00AM