Safety report on the treatment of safety-critical systems in transport airplanes.

"NTSB/SR-06/02."

Implementing the state's most critical highway safety needs. Final report.

Federal Highway Administration, Washington, D.C.

Problems in occupational safety and health : a critical review of select worker physical and psychological factors /

Mode of access: Internet.

Effectiveness of safety belt usage laws. Final report.

National Highway Traffic Safety Administration, Washington, D.C.