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Speeding, commonly defined as exceeding the posted speed limit or driving too fast for conditions, is a primary crash causation factor across the globe. Based on a survey of road safety performance,
2 mar 2017 · Basics. FHWA-SA-16-076. Speed limits frame expectations for drivers and other roadway users. Properly set speed limits provide a safe, consistent, and reasonable speed to protect drivers, pedestrians, and bicyclists along the roadway.
ͧ Establish speed limits that are appropriate to the primary purpose of the road, provide a balance between mobility and safety for all roadway users, and meet all state or local legal requirements. ͧ Design roads that produce desired speeds. ͧ Introduce physical countermeasures to create a self-regulating roadway
When setting a speed limit, agencies should consider a range of factors such as pedestrian and bicyclist activity, crash history, land use context, intersection spacing, driveway density, roadway geometry, roadside conditions, roadway functional classification, traffic volume, and observed speeds.
This report presents the procedures that highway agencies can and do use to set speed limits. As an informational report it provides a broad overview of the different speed limit setting methods that are available for use, but it makes no specific policy recommendations or suggestions.
Guidelines for setting work zone speed limits based on state laws, agency policies, and engineering judgment.
Statutory speed limits are established by State legislatures for specific types of roads (e.g., Interstates, rural highways, urban streets) and can vary from State to State.