TULSA, Oklahoma - An Oklahoma Highway Patrol trooper rescued a driver trapped in a car after a crash in Tulsa early Friday.

Troopers said a northbound car hit the concrete center median near the Pine Street interchange just after midnight.  

An OHP trooper who was also headed north stopped, freed the woman from the wreckage and began medical treatment until the Tulsa Fire Department and EMSA arrived.

The woman told the trooper she didn't know what caused the crash.