The purpose of the highway safety program is to provide a coordinated federal, state and local effort to reduce traffic-related deaths, injuries, and property damage crashes.
The following eight highway safety priority areas have been established by the federal government to provide a guide to program involvement and reimbursement: alcohol; police traffic services; emergency medical services; traffic records; occupant restraints; engineering; motorcycles; and pedestrians/bicycles.
Iowa Admin. Code r. 661-20.2
The federal government may add additional priority areas as traffic trends change.