A delivery truck ran over a cyclist's head, leaving him only with a concussion and a mangled helmet.

Ryan Lipscomb, 26, was shaken up, especially after he saw the condition of his helmet.

"I didn't see it coming, but I sure felt it roll over my head," he said. "It feels really strange to have a truck run over your head."

Lipscomb, a graduate student in medical physics at the University of Wisconsin-Madison, was riding swiftly down a bike path in Madison Friday afternoon. As he approached an intersection where he said he had a green light, he noticed the truck preparing to make a right turn in front of him.

The truck wasn't going to stop, Lipscomb said, so he slammed on his brakes, flipping his bike and landing in the street.

A moment later the truck rolled over his head — and kept going.

His black Giro helmet was flattened, tread marks visible on the cracked frame.

Lipscomb was taken to the hospital and released about three hours later.

"I'm OK except for a concussion," he said Friday night.

Police initially declined to call the incident a hit-and-run, saying it was unclear whether the driver knew someone had been hit. But Sgt. Bernie Gonzalez later updated the accident report to include the designation.

Lipscomb said he was already in the street as the truck was turning.

"The truck driver definitely would have known," he said. "You know when you run over a curb and my head was definitely higher than a curb."

A message left for police spokesman Mike Hanson was not immediately returned Sunday.