SCHEME FOR EVALUATING A LOCAL QUEUE WARNING SYSTEM

A method of evaluating an automatic queue warning system is outlined. The main object of the evaluation is to measure the effect of such a system on traffic behaviour and road safety, although the overall journey time is also examined. The chosen method of research entails before and after studies, if possible complemented with control groups. Factors likely to have a disturbing effect on this method of research are also discussed, together with their respective solutions. Finally, a look is taken at the number of accidents required for a statistically reliable analysis. /Author/TRRL/

• Corporate Authors:

  Institute for Road Safety Research, SWOV

  Bezuidenhoutseweg 62
  The Hague,   Netherlands  2594 AW
• Authors:
  • Botma, H
  • OEI, H L
• Publication Date: 1977

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 22 p.

Subject/Index Terms

• TRT Terms: Automatic control; Automation; Before and after studies; Behavior; Evaluation; Evaluation and assessment; Measurement; Minicomputers; Queuing; Sensors; Speed; Traffic control; Traffic flow; Traffic safety; Traffic signal control systems; Traffic signals; Travel time; Trip length
• ITRD Terms: 3882: Automatic; 9148: Before and after study; 9001: Behaviour; 8673: Digital computer; 9020: Evaluation (assessment); 697: Journey time; 6136: Measurement; 6594: Queue; 6120: Sensor; 5408: Speed; 654: Traffic control; 671: Traffic flow; 565: Traffic signal
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00174141
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Jul 29 1978 12:00AM