At 22:02 the tones dropped for Rescue 20 to respond to Pleasent Valley Rd @ Trafford Rd for a reported vehicle accldent with unknown injuries. Medics from 610 were on scene followed by capt 20. Rescue 20 went enroute with 4 with capt 20 reporting 2 vehicles blocking the roadway and debris. Rescue 20 called on scene and crews began cleanup and checking for hazards.Medics reporting no injuries and kept the support and 1 ambulance on scene with the rescue waiting on the tows. Crews out for little over a hour. As rescue 20 was clearing Station 20 was dispatched to assist st 64 on a smell of smoke in a home in the White Valley area of murrysville. Chief 64 arrived on scene and held it to st 64 units reporting a bad light ballast.