THE CONTROL OF SHUTTLE WORKING AT ROADWORKS

The execution of roadworks on single carriageway roads often requires the closure to traffic of all except one lane of the carriageway. Alternate one-way working of the two opposing streams of the traffic may then be operated as the single running lane using one of the following methods of control. (1) no specified priority, (2) signed priority, (3) fixed time (ft) and vehicle actuated (va) traffic signals, and (4) manually operated stop/go signs. The study presented in this paper sought to determine the range of site and traffic conditions in which the first three of these systems operate satisfactorily and to compare user delay. In the case of method 3 the performance of a proposed modification of the signal cycle to improve the efficiency of signal control has been evaluated in addition to that of existing fixed time and vehicle actuated operation. The results of the study have been used to determine a rank order of preference for the system based on minimising user delay for various ranges of site length and flow which may be used as a means of selecting the optimum control method for a particular roadwork. The performance of the systems has been compared using a computer simulation model because of the difficulty of obtaining comparable data over a wide range of conditions on the public road. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0860500667
• Supplemental Notes:
  • Highway Construction and Maintenance Proceedings of Seminal P Held at the PTRC Summer Annual Meeting.
• Corporate Authors:

  Planning and Transport Res and Computation Co Ltd

  109 Bedford Chambers, 4 King Street
  London,   England 
• Authors:
  • Summersgill, I
• Conference:
  • Planning & Transport Res & Comp, Sum Ann Mtg, Proc
• Publication Date: 1979

Media Info

• Features: Figures; References;
• Pagination: p. 181-191
• Serial:
  • Issue Number: P185

Subject/Index Terms

• TRT Terms: Bus priority; Conferences; Construction sites; Lane closure; Manual control; Mathematical models; Methodology; Optimization; Pretimed traffic signal controllers; Simulation; Size; Strategic planning; Street closure; Traffic actuated controllers; Traffic control; Traffic delays; Traffic flow; Traffic lanes; Traffic signal cycle; Traffic signal preemption; Traffic signals; Traffic signs; Travelers; Work zone traffic control
• Uncontrolled Terms: Manual (By hand); One
• ITRD Terms: 8525: Conference; 3628: Construction site; 9010: Delay; 9014: Dimension; 577: Fixed time (signals); 2002: Hand (human); 6473: Mathematical model; 9102: Method; 9054: One; 648: Priority (traffic); 637: Road closure; 1755: Road user; 9103: Simulation; 654: Traffic control; 671: Traffic flow; 2827: Traffic lane; 553: Traffic sign; 565: Traffic signal; 557: Vehicle actuated
• Subject Areas: Highways; Maintenance and Preservation; Operations and Traffic Management; Public Transportation; Society; I61: Equipment and Maintenance Methods; I73: Traffic Control;

Filing Info

• Accession Number: 00324969
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 086050-066-7
• Report/Paper Numbers: Monograph
• Files: ITRD, TRIS
• Created Date: May 21 1981 12:00AM