TRAFFIC SIGNALLING AND TRAFFIC SAFETY

VERKEERSSIGNALERING EN VERKEERSVEILIGHEID

Traffic signalling systems are used increasingly to improve road capacity and traffic safety. The report reviews the different systems in different countries, which are used on motorways. The basis of all systems is to stabilize the traffic flow for as long as possible. By an increse of intensity there is generally a decrease of speed. If there is a certain degree of saturation the traffic flow will become unstable, with a greater chance of accidents, and a decreasing capacity. Traffic signalling systems must give information to the driver and to do so he must have certain criteria such as good visibility, good understanding of symbols, good legibility etc. Components of traffic signalling systems are: systems for incident detection; traffic lane signalling; alternative route indicators, warning systems for fog, wind, snow and black ice; and congestion indicators. Beside these traffic signalling systems some traffic control systems, which are more or less linked to the other systems, are discussed.

• Supplemental Notes:
  • Text in Dutch, summary in English. North American Continent sales only. All others contact Institute for Road Safety Research, S.W.O.V., P.O.B. 170, 2260 AD Leidschendam, the Netherlands.
• Corporate Authors:

  Institute for Road Safety Research, SWOV

  Bezuidenhoutseweg 62
  The Hague,   Netherlands  2594 AW
• Authors:
  • Schoon, C C
• Publication Date: 1987

Language

• Dutch

Media Info

• Pagination: 43 p.

Subject/Index Terms

• TRT Terms: Highway capacity; Legibility; Safety; Traffic control; Traffic density; Traffic flow; Traffic safety; Traffic signal control systems; Traffic signals; Traffic signs; Visibility; Warning systems
• Old TRIS Terms: Traffic control systems
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 00494627
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: R-87-12
• Files: TRIS
• Created Date: Jun 30 1990 12:00AM