A motorist died after crashing into a state trooper's vehicle Friday night in Far North Dallas.

A maroon Toyota was speeding south in the left lane of the Dallas North Tollway near the Trinity Mills Road overpass when the crash occurred around 8:45 p.m., said Lt. Lonny Haschel of the Texas Department of Public Safety.

The Toyota's driver lost control and veered across the tollway, eventually striking the trooper's Chevy Tahoe that was parked on the shoulder. The trooper was waiting for a tow truck to move an abandoned vehicle.

The Toyota's driver died at the scene, Haschel said. The trooper was not injured.

The southbound lanes of the Dallas North Tollway were closed at the scene and traffic was diverted off the tollway at Frankford Road.

The cause of the crash is under investigation.

Bitter cold and a dusting of snow moved through the Dallas area Friday afternoon, and icy roads and bridges led to backed-up traffic and a number of accidents during the evening rush hour.