Almost all commenters find some problem with this, but I have seen this work on my own dad who unfortunately prefers going 10kph over the speed limit most of the time. Either the traffic lights are timed in sequence or sensors are placed so that with low traffic, lights stay red until a car approaches and the light is timed with the location of the sensor for going the speed limit. The last one also allows pedestrian and bike lights to stay green when there isn’t any car traffic.
the location of the sensor for going the speed limit
Unfortunately, placing sensors that far back from the intersection is costly, both in initial installation and maintenance. Most sensors in the US are right at the stop-lines for the intersection only (with frustrating effect when an overly light scooter or other phenomenon stops the sensor from sensing a vehicle).
Almost all commenters find some problem with this, but I have seen this work on my own dad who unfortunately prefers going 10kph over the speed limit most of the time. Either the traffic lights are timed in sequence or sensors are placed so that with low traffic, lights stay red until a car approaches and the light is timed with the location of the sensor for going the speed limit. The last one also allows pedestrian and bike lights to stay green when there isn’t any car traffic.
Unfortunately, placing sensors that far back from the intersection is costly, both in initial installation and maintenance. Most sensors in the US are right at the stop-lines for the intersection only (with frustrating effect when an overly light scooter or other phenomenon stops the sensor from sensing a vehicle).