The Bureau of Safety Data & Data Services compiles crash data and evaluates and analyzes the information for highway improvements in problem areas. It also offers historical information for crashes involving young drivers, senior drivers, pedestrians, pedal cycles, motorcycles, school buses, tractor-trailers and work zones. The Bureau of Safety Data & Data Services is a part of the Division of Traffic Safety in Springfield, Ill. It is responsible for inspection of school buses, trucks and ambulances and overseeing the transportation of hazardous materials. The division provides funding for the enforcement of impaired driving and seat belt laws and for various traffic safety public information and educational programs.