PennDOT has issued an alert about line painting in Beaver County this weekend. According to PennDOT, crews will be painting lines along Route 51 in the area of the Ambridge Aliquippa Bridge in the city of Aliquippa and Hopewell Township from 8 a.m. to 4 p.m. on Saturday. In an effort to prevent paint from getting on vehicles, motorists are being asked to stay 250 feet behind the painting equipment. Motorists should also wait to pass the painting vehicles until instructed to do so by a member of the crew. PennDOT is not usually responsible for paint on vehicles.