What Are the Benefits of Speed Bumps?


Speed bumps are raised areas of pavement designed to slow down drivers. Speed bumps can be controversial; although they can improve safety, they have many drawbacks. The process of slowing and diverting traffic is often called traffic calming.


  • Speed bumps are usually defined as the smaller raised areas usually found in parking lots. Speed bumps are generally 3 to 6 inches high. Speed bumps sometimes refer to speed humps, which are longer, rounded raised areas 3 to 4 inches high.

Slowing Traffic

  • Speed bumps can effectively slow traffic speeds.

Decreasing Traffic

  • Speed bumps can also reduce the volume of traffic on a street by diverting traffic to other streets.

Increased Safety

  • Slower drivers and less traffic can reduce accident rates.


  • Opponents of speed bumps argue that they are dangerous to bicyclists and motorcyclists, increase response times of emergency vehicles and increase vehicle emissions because of increased deceleration and acceleration.

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  • Photo Credit Image by Flickr.com, courtesy of Ibrahim Iujaz
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