The unwritten law in the United States that allows motorists to exceed the speed limit by five to ten miles per hour.

On United States Interstate Highways this rule may be increased in effectiveness. In some states ten, fifteen, or even upwards of twenty miles per hour over the speed limit is acceptable due to local police or highway patrol policies and employment status.

In residential areas, suburbs, highly urban areas, or jurisdictions with very strict quotas this rule may not apply.

See Also: Speeding ticket, Law Enforcement