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Selective vehicle detection

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Selective vehicle detection is a system used by London Buses in order to allow traffic signals to selectively favour buses' movement through intersection by changing traffic light sequences and timings as buses approach. The current system works 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 bus tracking system.[1]

As of 2011, a new bus location system, Countdown II, was in the process of being commissioned.[2]

References

  1. ^ The way ahead for London's bus priority at traffic signals
  2. ^ Matt Stephens (19 October 2011). "TfL wheels out digital bus info upgrade". The Register.