The Livingston County Sheriff’s Office is investigating a school bus crash at the Dansville bus garage. Investigators say the bus crashed into a parked school bus around 7:30 p.m. Tuesday. Sheriff Tom Dougherty says only the bus driver was on board at the time of the crash. The driver is in serious condition. He was taken to Noyes Hospital in Dansville. Investigators say a medical condition may have led to the crash.