FOCUS ON SIGNS AND MARKINGS: MOVABLE TRAFFIC DEVICES IN AUSTRALIA

Engineers in the New South Wales Department of Main Roads have developed three traffic devices with a unique versatility. They are all designed to move in some way and guide traffic into improved flow conditions. The need for these devices usually arises on roads or bridges subject to reversible (tidal) traffic flow. To improve the flow on the warringah freeway, which leads to the sydney harbour bridge, sliding signs are used. Two sets of signs bearing different legends are employed, one set being displayed, the other stored behind those being displayed or behind a special blank storage panel. The signs are electrically operated. On the Sydney Harbour Bridge one-way toll was introduced in July 1970. This ment that when the traffic flow was reversed some booths were not needed. The problem was solved by adapting electrically operated tractors to act as movable toll booths. In the centre of many roads the raised dividing strip, the median, is a most effective means of dividing traffic. For locations where reversible traffic flows occur a fixed median is not appropriate. A movable median has been developed which can be moved on its spring-loaded wheels using the power from an electric power pack. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://www.worldcat.org/title/traffic-engineering-and-control/oclc/58593435
• Corporate Authors:

  Printerhall Limited

  29 Newmart Street
  London W1P 3PE,   England 
• Publication Date: 1975-2

Language

• English

Media Info

• Features: References;
• Pagination: p. 91-93
• Serial:
  • Traffic Engineering & Control
  • Volume: 16
  • Issue Number: 2
  • Publisher: Hemming Group, Limited
  • ISSN: 0041-0683
  • Serial URL: http://www.tecmagazine.com/

Subject/Index Terms

• TRT Terms: Contraflow lanes; Design; Electricity; Freeways; Lettering; Median barriers; Medians; Portable equipment; Reversible traffic lanes; Toll roads; Traffic signs; Variables
• Uncontrolled Terms: Mobile equipment
• Geographic Terms: Australia
• Old TRIS Terms: Reverse flow; Traffic sign design
• ITRD Terms: 8006: Australia; 2914: Central reserve; 6954: Electricity; 541: Lettering; 2752: Motorway; 9060: Portable; 607: Reversible lane; 2702: Toll road; 553: Traffic sign; 9086: Variability
• Subject Areas: Design; Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00125110
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Nov 18 1975 12:00AM