PITTSBURGH (KDKA/AP) – A transit bus driver and three passengers have been hurt after the vehicle was hit by a car who Pittsburgh police believe may have been under the influence of drugs or alcohol.

Port Authority of Allegheny County spokesman Adam Brandolph says the crash happened about 9 a.m. Friday downtown. The driver of a sedan crossed into a bus lane near the intersection of Fifth Avenue and Cherry Way and hit the transit vehicle head-on.

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The driver of the 71A bus was taken to Allegheny General Hospital, while the three passengers were taken to UPMC Mercy.

Port Authority spokesman Jim Ritchie says all of them had neck and back injuries, but nothing appeared to be serious.

“They were all taken to hospitals with relatively minor injuries,” he said.

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Police have identified the driver of the car as 41-year-old Peter Steberger.

He appeared to have a head injury, but refused to be treated by emergency responders.

“The driver had been reported by other motorists, prior to the accident, who saw him driving erratically in the minutes leading up to the accident,” Ritchie said, “and so there were several 911 calls saying that this guy was all over the road and that they were concerned about it.”

So concerned that many of those other drivers stopped at the crash scene and told police what they’d witnessed prior to the accident.

Steberger refused to be drug tested at the scene and was later charged with driving under the influence, reckless driving, possession of a controlled substance and possession of drug paraphernalia.

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Lynne Hayes-Freeland