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Some EU countries have speed-controlled lights. So if one person goes over the limit it holds everyone up for a couple of minutes.

There are no tickets or fines, just chagrin. It works surprisingly well.

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I'm not aware of lights like that in the US but we do have places where the stoplights are timed to a few mph below the speed limit. If you drive 38, you'll hit every green light. If you drive 45, you get to stop at red lights while the car going 38 catches up.

Some people insist on going 50 anyway and I swear some people think that if they go 80 they'll also get the green lights. :)

If there are multiple red-green cycles per 38mph interval, the 80-goers would be right! ;) (eg. you launch from the first light, the next light ahead goes green, red, green before you get through)

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