This re-enforces what a lot of us believed already. Now, however, there’s a study to prove it.

Survey: Most States Allow Driving Speed Cushion

Authorities patrolling U.S. highways tend to give motorists a cushion of up to 10 miles per hour above the speed limit before pulling them over, says a survey by a group of state traffic safety officials.

This practice creates an unsafe comfort level at high speeds and is a potential safety hazard, according to the report being released Monday by the Governors Highway Safety Association. The group found that 42 states allow drivers to regularly exceed the speed limit before they are stopped.