By Jeff Slack, 1310 News, May 30, 2019
A cyclist is raising concern about technology used to trigger sensors that change traffic lights after he had a close call with on coming traffic.
This technology is called 'revert reds,' and it's used mainly on streets that intersect with busy roadways to help keep the flow of traffic moving an intersection.
When a bike or vehicle sits over the sensor at a main road, only then does it triggers a countdown for the light to turn green, however if the vehicle is past the sensor mark it can quickly switch the signal from green back to red.
https://www.ottawamatters.com/local-news/ottawa-cyclist-calling-for-the-end-of-sensors-at-traffic-lights-1482066