Selective vehicle detection
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Selective vehicle detection is, or was, the name of a bus priority system used by
London Buses London Buses is the subsidiary of Transport for London (TfL) that manages most bus services in London, England. It was formed following the Greater London Authority Act 1999 that transferred control of London Regional Transport (LRT) bus se ...
to allow traffic signals to selectively favour buses' movement through intersection by changing traffic light sequences and timings as buses approach. , the system worked using 'bus detectors' mounted on lampposts and similar posts by the side of the road, which detect transmission made by transmitters aboard buses, developed as part of Transport for London's
Countdown A countdown is a sequence of backward counting to indicate the time remaining before an event is scheduled to occur. NASA commonly employs the terms "L-minus" and "T-minus" during the preparation for and anticipation of a rocket launch, and eve ...
bus tracking system.The way ahead for London's bus priority at traffic signals
/ref> TfL was, at that time, considering whether to use newer, GPS-based, bus location systems to supplant the existing beacon-based infrastructure. , a new bus location system, Countdown II, was in the process of being commissioned.


See also

* London iBus system


References


External links


Bus priority at traffic signals keeps London's buses moving

Siemens Selective Vehicle Detection

Attitudes to bus priority schemes

Review of bus priority at traffic signals around the world

Attitudes to bus priority schemes – Research Summary
Traffic signals Road transport in London Bus transport in London Road traffic management {{UK-bus-transport-stub