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Title: Effect of vehicle type on highway traffic flow : effects of vehicle type on speed, delay and capacity characteristics of highway traffic flow in the United Kingdom and Saudi Arabia determined by an examination of traffic data
Author: Alkaim, Al-Akhdar
ISNI:       0000 0001 3414 6487
Awarding Body: University of Bradford
Current Institution: University of Bradford
Date of Award: 1987
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The thesis considers the effects of vehicle type on highway traffic control. The effects of vehicle type on the capacity of traffic signal approaches are examined by the experimental determination of passenger car units at intersections in London and West Yorkshire and in addition saturation flows and lost times are examined. Vehicle type effect at roundabout entries are investigated and the results of field observations reported. Details are given of the gap acceptance of varying vehicle types, the effect of vehicle type on delay and comparisons are made with existing recommendations for the capacity design of roundabout entries. Observations of traffic flow on a rural motorway are used to demonstrate the effect of vehicle type on speed and observed values are fitted to a normal distribution. Overtaking behaviour is also examined and conclusions drawn of the relative effect on capacity of vehicle type. A review is given of the effects of vehicle type on the design and operation of the highway system in Saudi Arabia.
Supervisor: Salter, R. J. Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Vehicle types ; Highway traffic flow ; Traffic signal approaches ; Capacity ; Saturation flows ; Roundabout entries ; Delays ; Overtaking behaviour ; London ; West Yorkshire ; Saudi Arabia