# Do you know how traffic lights work...

**URL:** <https://forums.speedlife.net/t/do-you-know-how-traffic-lights-work/17475>\
**Category:** NYSpeed Automotive\
**Created:** [September 14, 2006, 12:52pm UTC](https://forums.speedlife.net/t/do-you-know-how-traffic-lights-work/17475 "2006-09-14T12:52:55Z")\
**Posts on this page:** 1\
**Showing post:** 31

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**Author:** ![redrum](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/redrum/32/7398_2.png) [@redrum](https://forums.speedlife.net/u/redrum)\
**Post date:** [September 14, 2006, 8:35pm UTC](https://forums.speedlife.net/t/do-you-know-how-traffic-lights-work/17475/31 "2006-09-14T20:35:42Z")

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ahh no.

some lights are on timers, like those on equally busy streets, but nearly all lights that involve one busy street, and a quiet side street, or turning lanes, use sensors.

otherwise the busy street would constantly be stopped for no reason.

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