[pitched]

All traffic lights but especially the ones set to do rolling green lights. The rolling green lights assume someone’s going the speed limit (which no one does) so it introduces more stop-and-go than if they all switched at the same time! But traffic lights on their own are all optimized for the peak 20 min of traffic instead of the other 24 hours. They really don’t make sense outside of peak.

[AnimalMuppet]

We visited some small town when I was a kid. They had rolling green lights. Their signs didn't say "speed limit 25". Instead they said "lights are synchronized for 25". Once you figured out that they were telling the truth, you drove 25.

[marto1]

I'd be highly surprised if rolling green lights are implemented the exact same way across geographies. Does anyone have more details on how this works ? It has been an area of curiosity for me for quite a long time.