How effective are speed cameras and average speed checks?

Answer

Speed cameras and average speed checks are both very effective in reducing crashes, but the latter are more effective. A meta-analysis of speed enforcement studies [36], shows that camera enforcement results in a 19% reduction of the total number of crashes and a 21% reduction of the number of serious and fatal crashes. A meta-analysis of average speed check studies [37] shows these checks result in a 30% reduction of the total number of crashes and a 56% reduction of the number of serious and fatal crashes. For more information see SWOV fact sheet Traffic enforcement.

Part of fact sheet

Speed and speed management

If the average speed on a road increases, crash risk also increases, as does the risk of a serious outcome.

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