A Guide for Reducing Speeding-Related Crashes (2009) / Chapter Skim
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. As it is common practice for posted speed limits to be some nominal value less than the design speed (often 5 mph)
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. Roadways with unknown or no statutory speed limits accounted for 15 percent of speeding-related fatalities.
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Improve efficiency and effectiveness of speed enforcement efforts A1 Set speed limits which account for roadway design, traffic, and environment A2 Implement variable speed limits A3 Implement differential speed limits for heavy vehicles if appropriate (High Speed Only) B1 Increase public awareness of risks of driving at unsafe speeds B2 Increase public awareness of potential penalties for speeding B3 Increase public awareness of risks of not wearing seatbelts B4 Implement neighborhood speed watch/traffic management programs (Low Speed Only)
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Ensure that roadway design and traffic control elements support appropriate and safe speeds EXHIBIT I-1 (Continued) Objectives and Strategies for Addressing Speeding-Related Fatalities Objectives Strategies D1 Improve speed limit signage D2 Implement active speed warning signs D3 Use in-pavement measures to communicate the need to reduce speeds D4 Implement variable message signs (High Speed Only)
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Geometric elements which affect operating speeds, such as horizontal and vertical curves, can be designed in combinations to encourage appropriate speeds. Intersection types and designs should be appropriate for the context of the roadway.
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