# 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:** 26

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**Author:** ![LiveRound](https://avatars.discourse-cdn.com/v4/letter/l/4491bb/32.png) [@LiveRound](https://forums.speedlife.net/u/LiveRound)\
**Post date:** [September 14, 2006, 5:38pm UTC](https://forums.speedlife.net/t/do-you-know-how-traffic-lights-work/17475/26 "2006-09-14T17:38:40Z")

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i always thought red lights were opional? :shrug:

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