PRIORITY FOR BUSES IN TRAFFIC SIGNAL SYSTEMS

PRIORITERING AV BUSSAR I TRAFIKSIGNALANLAEGGNINGAR

Projects carried out in Stockholm indicate that driving time and regularity improve when priority is given to buses by the use of selective detection devices in traffic signal systems. In order to obtain effective priority, detection of the buses in sufficient time before their expected arrival at the signal is required. Selective detection is carried out using transponder influenced detectors and long loop detectors. Transponder influenced detectors are composed of a receiver/transmitter unit installed in the bus and are activated when the bus crosses the detector. The transponder used in the projects has the design of a code unit inside the bus connected to the bus battery and an aerial fixed under the bus. There is also a transponder design using micro wave technique with the receiver/transmitter placed on a post 3 M over the ground and the transponder placed on the upper edge of the bus. The long loop detector is designed as an amplifier and a wire placed in the street enclosing an area corresponding to a bus. No extra equipment is required on the bus. /TRRL/

• Corporate Authors:

  Engwall and Strahle AG

  Brunkebergstorg 20/4
  Stockholm C,   Sweden 
• Authors:
  • Wallin, E
• Publication Date: 1977

Language

• Swedish

Media Info

• Features: Figures;
• Pagination: p. 3-7
• Serial:
  • Stadsbyggnad
  • Issue Number: 1-2

Subject/Index Terms

• TRT Terms: Bus priority; Buses; Radio transmitters; Sensors; Traffic actuated controllers; Traffic control; Traffic control devices; Traffic signal preemption; Traffic signals; Urban areas; Vehicle detectors
• ITRD Terms: 1272: Bus; 648: Priority (traffic); 6120: Sensor; 654: Traffic control; 565: Traffic signal; 313: Urban area; 557: Vehicle actuated
• Subject Areas: Highways; Operations and Traffic Management; Public Transportation; I73: Traffic Control;

Filing Info

• Accession Number: 00163333
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Apr 12 1978 12:00AM