ALL CLEAR AHEAD WHEN BELLS GO DOWN

A trial has begun in Northampton to demonstrate, compare and evaluate various methods of giving priority to emergency vehicles travelling through an existing road network. The article describes the experimental design and instrumentation involved. Two basic systems are being evaluated, one designed for use at isolated signal junctions (evade) employing microwave signalling, and the other system, known as green wave, giving a computer controlled succession of green lights in a dense urban area. Journey time and accident statistics for appliances are being studied. Selective vehicle detection equipment and evade transmitters have been fitted to six fire appliances. Road loops are to be used to compile data on journey times between successive sites. The evade equipment will be used to detect the vehicle and update the computer with its position in the road network. Preliminary results show that the system is capable of providing accurate and reliable data on fire appliances behaviour in varying traffic conditions. (TRRL)

• Corporate Authors:

  IPC Building and Contract Journals Limited

  Surrey House, 1 Throwley Way
  Sutton, Surrey SM1 4QQ,   England 
• Authors:
  • Griffin, R M
  • Johnson, D
  • STEED, J J
• Publication Date: 1977-10-11

Media Info

• Features: Photos;
• Pagination: p. 10-11
• Serial:
  • Surveyor - Public Authority Technology
  • Volume: 154
  • Issue Number: 4557
  • Publisher: IPC Building and Contract Journals Limited

Subject/Index Terms

• TRT Terms: Bus priority; Crashes; Emergency vehicles; Information processing; Intersections; Microwaves; Sensors; Strategic planning; Surfacing; Traffic control; Traffic signal control systems; Traffic signal controllers; Traffic signal preemption; Traffic signals; Travel time; Trip length; Urban areas; Vehicle detectors; Vehicles; Waves
• Uncontrolled Terms: Micro
• Geographic Terms: United Kingdom
• ITRD Terms: 1643: Accident; 1261: Emergency vehicle; 697: Journey time; 455: Junction; 597: Linked signals; 9045: Micro; 648: Priority (traffic); 6120: Sensor; 2972: Surfacing; 565: Traffic signal; 8119: United Kingdom; 313: Urban area; 1255: Vehicle; 6767: Wave
• Subject Areas: Highways; Operations and Traffic Management; Public Transportation; Safety and Human Factors; Vehicles and Equipment; I73: Traffic Control;

Filing Info

• Accession Number: 00310179
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Oct 8 1980 12:00AM