A METHOD OF ASSESSMENT OF DELAYS CAUSED BY ROADWORKS

Roadworks inevitably cause delays to traffic and these are rarely evaluated. As part of the economic assessment of a road improvement scheme, a method of measuring these delays was derived. A model was built that reflected the unrestricted situation in terms of traffic flows and travel time, and the total travel costs were worked out. The model was then changed to represent the effects of major roadworks on the link in question and the total costs re-evaluated; the two costs were then compared to give disbenefits. The model uses deterministic principles and takes account of a balance of traffic volumes queueing on the main route and those that divert. The model was run for the "do-nothing" and "proposed scheme" situations and the difference in the disbenefits assumed as an economic benefit of building the proposed scheme. The benefits calculated constituted over 50 per cent of the total benefits of the scheme.(a) (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00410683
• Corporate Authors:

  Printerhall Limited

  29 Newmart Street
  London W1P 3PE,   England 
• Authors:
  • DAVIES, R F
  • VINCENT, J F
  • JACOBY, R G
• Publication Date: 1981-1

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 9-13
• Serial:
  • Traffic Engineering & Control
  • Volume: 22
  • Issue Number: 1
  • Publisher: Hemming Group, Limited
  • ISSN: 0041-0683
  • Serial URL: http://www.tecmagazine.com/

Subject/Index Terms

• TRT Terms: Benefit cost analysis; Benefits; Construction sites; Costs; Economic analysis; Highways; Improvements; Mathematical models; Measurement; Queuing; Traffic delays; Traffic diversion; Traffic flow; Traffic volume; Travel; Travel budgets; Travel costs; Travel time; Trip length
• Uncontrolled Terms: Models
• ITRD Terms: 3628: Construction site; 224: Cost; 226: Cost benefit analysis; 9010: Delay; 628: Diversion (traffic); 2755: Highway; 9108: Improvement; 698: Journey; 697: Journey time; 6473: Mathematical model; 6136: Measurement; 6594: Queue; 671: Traffic flow
• Subject Areas: Economics; Finance; Highways; Operations and Traffic Management; I10: Economics and Administration; I71: Traffic Theory;

Filing Info

• Accession Number: 00334120
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Aug 15 1981 12:00AM