BENSALEM, Pa. (AP) - Authorities say an early morning accident in a construction zone on the Pennsylvania Turnpike killed a driver and injured four construction workers.

State police said the accident happened just before 5:30 a.m. Saturday in the eastbound lanes of the turnpike in Bensalem Township, Bucks County.

Trooper Kevin Rathman said the construction workers were apparently using a vehicle to pick up cones to reopen a closed lane when they were struck by the second vehicle.

The driver of that vehicle was pronounced dead at the scene.

One construction worker was flown to Temple University Hospital and another was taken by ambulance to Aria Health Torresdale hospital.

Information about their conditions wasn’t immediately available. The two other workers were said to have minor injuries.

The cause of the crash remains under investigation.

News of the accident comes as the PA DOT recently launched a new campaign urging drivers to take the Safe Driving Pledge.