Betweeen Exit 63 and Mile Post 60 there are airplane speed trap marks painted on the northbound left shoulder of the highway. The marks are thick, white lines, perpendicular to the direction of travel, and are 1/4 mile apart. It is impossible to tell when the speed trap is in effect until it’s too late. When the trap is in use against northbound traffic, State Troopers wait at Mile Post 61 and are set up to pull over many cars at the same time.

Though the marks appear only on the northbound shoulder, they can be used against southbound traffic as well.

Airplane enforcement can only be performed during the day, when the cloud ceiling is higher than 1000 feet and there are 3 miles or more of visibility.