Right-turn priority overlap stages provide a means of assistance for right-turning vehicles at traffic signals. The overlap facility can be provided in one of two ways. If the opposing flow is held such that the right-turn stage precedes the main stage this is known as an 'early start' or 'late release' overlap. Alternatively, if both approaches are released together, but the opposing flow terminates early so that right-turners then gain unopposed priority, this is known as an 'early cut-off'. This paper considers the above methods and their associated difficulties. Reference is also made to techniques used in Europe and Australia. Results of a study of the accident records of sites in Manchester to which different signalling techniques have been applied are discussed.

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  • Corporate Authors:

    Printerhall Limited

    29 Newmart Street
    London W1P 3PE,   England 
  • Authors:
    • Henson, R
    • LOWE, D
    • OVERTON, D T
  • Publication Date: 1992-1

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Filing Info

  • Accession Number: 00619468
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Feb 29 1992 12:00AM