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Speed limits in the United States vary depending on jurisdiction. Rural freeway speed limits of 70 to 80 mph (113 to 129 km/h) are common in the Western United States, while such highways are typically posted at 65 or 70 mph (105 or 113 km/h) in the Eastern United States.
This table contains the most usual posted daytime speed limits, in miles per hour, on typical roads in each category. The values shown are not necessarily the fastest or slowest. They usually indicate, but not always, statutory speed limits. Some states and territories have lower truck speed limits applicable to heavy trucks. If present, they ...
States with the Highest Speed Limits. The highest speed limit, observed in Montana, Nevada, and South Dakota, is 80 mph. These states, characterized by expansive rural highways and a low population density, allow for this elevated speed threshold.
Thirteen states have a speed limit of 75 mph, and another twenty-four have rural freeway limits of 70 mph. The lowest maximum speed limit is in Hawaii, where drivers can only reach 60 mph on rural freeways. Ten additional states limit speeds to 65 mph.
Speed Limits By State. +. −. Speed-Limits.com provides up-to-date information about speed limits and traffic laws in the United States. For information about the speed limits in your state, find your state on the speed limit map above or on the navigation bar.
The State Highway Commission may determine that a maximum limit upon any part of the state highway system is greater or less than reasonable upon the basis of an engineering and traffic investigation.
Statutory speed limits are general guidelines for certain types of roads while posted speed limits are the actual numbers you see on signs. Absolute speed limits are the numbers posted on signs indicating the maximum speed you can drive, whereas basic speed limits are situational depending on driving conditions.
