This paper considers techniques to predict and record the performance of different classes of vehicle operating in an Urban Traffic Control system. Fixed-time plans were developed using the TRANSYT predictive model and compared with data recorded with an instrumented car and Heavy Goods Vehicle (HGV). Controlled experiments were carried out on a section of unopened highway to establish cruise, delay and speed change components for the survey vehicles. On-street surveys were carried out on the urban road network in Loughborough with signal co-ordination from fixed-time plans optimised initially for minimum delay and then to minimise fuel. Control strategies were operated in collaboration with the Leicestershire County Council's Urban Traffic Control Unit. The main issues considered are: fuel savings achieved with "minimum fuel" plans for different size vehicles in peak and off-peak traffic conditions; a comparison of the predicted journey times and fuel for the urban road network with those measured link-by-link with the instrumented vehicles; the relative importance of the cruise, delay and speed change components for the HGV compared with the car; the effect of signal cycle time and other components in establishing fixed-time plans for signal co-ordination that minimised fuel consumption.

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  • Accession Number: 00486554
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 31 1989 12:00AM