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In the US, these are certainly real. Apparently, some did use strobe lights to signal the traffic lights. http://en.wikipedia.org/wiki/Traffic_signal_preemptio
by gamerdonkey 12y ago
In the US, these are certainly real. Apparently, some did use strobe lights to signal the traffic lights.
http://en.wikipedia.org/wiki/Traffic_signal_preemption http://en.wikipedia.org/wiki/Traffic_signal_preemption
I vaguely have memories of the state legislator having to pass new laws after the devices were installed because it was not technically illegal to have the emitter in your vehicle.
- tdfx 12y agoUsually only certain traffic signals are equipped with the detectors, but they do in fact use strobe lights to trigger the light switch and it does happen immediately. It doesn't work with any emergency lights, though -- a separate, specific strobe light be must installed to trigger the signal.