What effect do posted speed limits have on actual speeds?
Before and after studies consistently demonstrate that there are not significant changes in traffic speeds following the posting of new or revised speed limits. There is a common belief that the mere posting of speed limit signs will cause drivers to react accordingly. This is not true and is why posted speed limits must be realistic to receive compliance.

Unrealistically low speed limits will invite violation by responsible drivers and the enforcement of such unreasonably low limits sets up the speed trap, resulting in public antagonism toward police and poor public relations for the community.

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1. What is meant by uniform control devices?
2. How are speed limits set?
3. What effect do posted speed limits have on actual speeds?
4. What are the warrants necessary to install a stop sign?
5. What are the warrants for a multiway stop sign?
6. Can we use one way, do not enter, and turning restrictions to control people from cutting through traffic?
7. Can streets be restricted to residents only?
8. Can speed bumps or speed humps be deployed to control speeding vehicles?