Motorists can expect delays for about the next month on Derstine Road, between Funks Road and Kimberly Way, in Hatfield and Towamencin Townships. Traffic restrictions started Monday on that short stretch of roadway. It’s related to the affordable housing project for seniors that Advanced Living is building. Underground water and sewer pipes are being installed. Only local traffic, emergency vehicles and school buses are allowed on it between 7:00am and 3:00pm Monday through Friday, but it is open to all traffic at other times.