Research Report 279 MOVA: the 20 site trial

Publication Year

1990

Document Status

Current

Abstract

MOVA (Microprocessor Optimised Vehicle Actuation) is the new signal control strategy researched and developed by TRRL for independently operated traffic signal controlled junctions. Data from vehicle detectors on the junction approaches are analysed by an on-line microprocessor implementing the MOVA program; the durations of the green signals are controlled by a delay-and-stops-minimising logic, or, if any approaches become congested, by a capacity-maximising process. The Department of Transport hardware approvals procedure required the trial installation of 20 production MOVA units, and these have been used to demonstrate the strategy under a wide range of site conditions and traffic flows. The MOVA units were fitted into the existing signal controllers using standard interfaces. Results from an automatic assessment system, and the economic benefits of implementing MOVA at the 20 sites are presented.

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