Residents demand change after school bus accident on busy road in Frazer Twp.

FRAZER TOWNSHIP, Pa. — A woman was badly injured after crashing into the back of a school bus Wednesday afternoon in Allegheny County.

Investigators told Channel 11 News that the accident involving a school bus and van was reported on Riddle Run Road in Frazer Township about 4 p.m.

Police said the bus was stopped to drop off a student when the van smashed into the back of it.

According to investigators, the driver of the van was badly injured in the accident. A medical helicopter was called to take her to an area hospital.

Her name has not been released, but officials said she is a middle-aged woman from Tarentum.

Four students were on the Deer Lakes School District school bus at the time of the crash. They were all taken to UPMC Children's Hospital as a precaution to be checked out.

Officials said the students suffered minor injuries. The bus driver was not injured.

Neighbors who live near the site of the crash told Channel 11 News that they often worry about accidents on that stretch of road.

"It's a windy road, and everybody speeds on it," Peter Kralick said. "You really have to hustle across the street to get your mail without getting hit."

A section of Riddle Run Road remained closed for several hours following the accident while crews investigated and cleared the scene.

WPXI