Use of probe vehicles to increase traffic estimation accuracy in Brisbane

Reliable and accurate traffic information is essential for the development of traffic control and management strategies. Traffic information is mostly gathered from in-road vehicle detectors such as induction loops. Traffic Message Channel (TMC) service is a popular service which wirelessly sends traffic information to drivers. Traffic probes have been used in many cities to increase traffic information accuracy. A simulation to estimate the number of probe vehicles required to increase the accuracy of traffic information in Brisbane is proposed. A meso level traffic simulator has been developed to facilitate the identification of the optimal number of probe vehicles required to achieve an acceptable level of traffic reporting accuracy. The approach to determine the optimal number of probe vehicles required to meet quality of service requirements, is to simulate runs with varying numbers of traffic probes. The simulated traffic represents Brisbane's typical morning traffic. The road maps used in simulation are Brisbane's TMC maps complete with speed limits and traffic lights. Experimental results show that that the optimal number of probe vehicles required for providing a useful supplement to TMC (induction loop) data lies between 0.5 and 2.5 per cent of vehicles on the road. With less probes than 0.25 per cent, little additional information is provided, while for more probes than 5 per cent, there is only a negligible effect on accuracy for increasingly many probes on the road. The findings are consistent with on-going research work on traffic probes, and show the effectiveness of using probe vehicles to supplement induction loops for accurate and timely traffic information.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780958569132
• Authors:
  • Lee, J
  • RAKOTONIRAINY, A
• Conference:
  • Australasian College of Road Safety National Conference, 2009, Perth, Western Australia, Australia
• Publication Date: 2009-11

Language

• English

Media Info

• Pagination: 11p
• Monograph Title: Incidence and management of cervical spine injuries in fatal road traffic accidents

Subject/Index Terms

• TRT Terms: Data collection; Traffic flow; Traffic surveillance; Vehicles
• Geographic Terms: Australia; Brisbane (Australia)
• ITRD Terms: 9115: Detection; 8763: Driver information; TRAFFIC MANAGEMENT
• Subject Areas: Vehicles and Equipment; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01343571
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 9780958569132
• Files: ITRD, ARRB, ATRI
• Created Date: Jul 7 2011 8:48AM