And having speed limits set too low for the road leads to a mismatch between posted risk (the speed limit) and actual risk (the actual speed of cars) to pedestrians. There&#x27;s evidence that speed limits have no impact on how fast people actually drive[0], so posting a lower speed limit is less likely to have an impact than designing roadways for a certain speed in the first place.<p>[0]: <a href="https:&#x2F;&#x2F;www.ibiblio.org&#x2F;rdu&#x2F;sl-irrel.html" rel="nofollow">https:&#x2F;&#x2F;www.ibiblio.org&#x2F;rdu&#x2F;sl-irrel.html</a>