A 13 year old boy riding his bike to school on May 28, was struck by a car at Prospect Hill Road at the intersection of a newly opened bike trail in Waltham. Waltham Engine 4, Rescue 1 and Medic 1 responded.. Engine. 4 signed off with a boy with multiple abrasions and had Rescue 1 return. The boy was transported to Children’s Hospital in Boston with non threatening injuries.