55 mph
55 mph is a speed corresponding to 55 miles per hour, equating to about 90 km/h. Common usages include:
*In many states of the United States, a very common speed limit for rural secondary roads and many urban freeways.
*The 55 mph national speed limit from 1974 through 1987.
Slang for this speed is double nickels.
*In many states of the United States, a very common speed limit for rural secondary roads and many urban freeways.
*The 55 mph national speed limit from 1974 through 1987.
Slang for this speed is double nickels.
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