BUS PRIORITY IN INNER LONDON: 2. THE INNER LONDON BUS PRIORITY MODEL

AN OUTLINE IS GIVEN OF THE MODEL USED IN A STUDY INSTITUTED BY THE GREATER LONDON COUNCIL TO EXAMINE THE WAYS IN WHICH BUS LANES AND BUS-ONLY STREETS MIGHT BEST BE DEPLOYED IN INNER LONDON. THE MODEL WAS DEVELOPED TO ESTIMATE IN MONEY TERMS THE TIME AND DISTANCE CHANGES ACCORDING TO A STRATEGY OF PRIORITIES AND TO EMPHASIZE SOME OF ITS MORE NOTICABLE ASPECTS. THE MODEL WAS DESIGNED TO EVALUATE BOTH THE LOCALIZED EFFECTS AND THE MORE FAR-REACHING EFFECTS OF BUS PRIORITY MEASURES. THE OUTPUT OF THE MODEL FOR EACH TEST STRATEGY INCLUDED PLOTS OF LOCATIONS WHERE SPEED OF TRAFFIC WAS CHANGED BY THE STRATEGY AND WHERE QUEUES FORM. IT ALSO GAVE STANDARD PARAMETERS SUCH AS VEHICLE-HOURS, VEHICLE OCCUPANT HOURS, VEHICLE KILOMETRES, QUEUE LENGTHS AND AVERAGE SPEEDS FOR BUSES AND NON BUS TRAFFIC TOGETHER WITH BENEFITS TO BUSES, COMMERCIAL VEHICLES AND CARS EXPRESSED IN FINANCIAL TERMS. FURTHER DETAILS ARE GIVEN OF THE STRUCTURE OF THE DATA BASE WHICH CONSISTS OF 19 BASIC DATA ELEMENTS AND 28 TRAFFIC FLOW DATA, THE LINK TIME CALCULATIONS WHICH INCLUDE FIGURES SHOWING THE EFFECT OF CHANGING SATURATION FLOW AND CHANGING AREA OF QUEUED TRAFFIC UNITS ON THE AVERAGE NETWORK SPEED. THE TRIP MATRIX PRODUCTION AND THE UNLOADING/ RELOADING PROCESS, AND THE ECONOMIC EVALUATION. IT IS CONCLUDED THAT ALTHOUGH THE MODEL HAS SOME (INEVITABLE) WEAKNESSES IN DETAIL, ITS EVALUATIONS HAVE BEEN HELPFUL IN FORMULATING POLICIES RELATING TO THE PRESENT PROGRAMME OF INNER LONDON BUS LANES, AND IN A STUDY OF SUPPLEMENTARY LICENSING. THE FIRST PART OF THIS ARTICLE APPEARED IN TRAFFIC ENG CONTROL, 1974-02/03, 15 (10/11), P480.

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  • Corporate Authors:

    Printerhall Limited

    29 Newmart Street
    London W1P 3PE,   England 
  • Authors:
    • Coombe, R D
    • BUCHANAN, C M
    • Rickard, I E
    • Gower, J E
    • Brown, P
  • Publication Date: 1974-4-5

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Filing Info

  • Accession Number: 00265498
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Feb 27 1981 12:00AM