USE OF COMPUTER GRAPHICS TO MONITOR TRAFFIC IN THE SYDNEY METROPOLITAN AREA

The use of computer graphics as a traffic monitoring tool at the New South Wales Department of Main Roads Traffic Control and Emergency Centre is described. The graphics system is part of a large dedicated computer network which performs wide area control of traffic intersections. Closed circuit television cameras allow visual monitoring of most of the intersections in the Sydney central business district but these intersections only represent about 12 per cent of the number of intersections currently connected to the computer network. Computer graphics technology is used to partially compensate for the lack of closed circuit television coverage of intersections located outside the central business district. The graphics system is used to drive four independent colour monitors displaying various views of the traffic situation in the Sydney metropolitan area. The first is a geometrically accurate, though stylised, image of any individual intersection. This allows the operator to see what the intersection looks like and view the real time operation of it. Secondly, the operator can select an overall view of all the intersections connected to any one of the 12 regional minicomputers. This image displays the current traffic density as coloured road segments which allows the operator to quickly identify a problem area in that region. With the aid of a third diagram, which is a magnified view of a small group of intersections, the operator can isolate the trouble spot down to a specific side of the road in one intersection. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0858252058
• Supplemental Notes:
  • This paper was presented at the First Australasian Conference on Computer Graphics, Sydney, August 31 through September 2, 1983.
• Corporate Authors:

  Institution of Engineers

  11 National Circuit
  Barton, A.C.T.,   Australia 
• Authors:
  • Morgan, P F
• Conference:
  • This paper was presented at the First Australasian Conference on Computer Graphics, Sydney, August 31 through September 2, 1983.
• Publication Date: 1983-9

Media Info

• Pagination: p. 214-218
• Serial:
  • Issue Number: 83-1

Subject/Index Terms

• TRT Terms: Business districts; Charts; Computer graphics; Conferences; Continuous structures; Digital computers; Intersections; Measurement; Surveillance; Traffic control; Traffic flow; Traffic surveillance
• Geographic Terms: Australia
• ITRD Terms: 8006: Australia; 302: Business district; 6486: Chart; 8525: Conference; 9006: Continuous; 8673: Digital computer; 455: Junction; 6136: Measurement; 9101: Surveillance; 654: Traffic control; 671: Traffic flow
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00382334
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 0 85825 205 8
• Report/Paper Numbers: 0
• Files: ITRD, TRIS, ATRI
• Created Date: Apr 30 1984 12:00AM