Cambridge Systematics, American Automobile Association, National Cooperative Highway Research Program, & National Research Council (U.S.). Transportation Research Board. (2006). Identification of liability-related impediments to sharing §409 safety data among transportation agencies and a synthesis of best practices. Transportation Research Board.

Cambridge Systematics, American Automobile Association, National Cooperative Highway Research Program, và National Research Council (U.S.). Transportation Research Board. Identification of Liability-related Impediments to Sharing §409 Safety Data Among Transportation Agencies and a Synthesis of Best Practices. Washington, D.C: Transportation Research Board, 2006.

Cambridge Systematics, et al. Identification of Liability-related Impediments to Sharing §409 Safety Data Among Transportation Agencies and a Synthesis of Best Practices. Transportation Research Board, 2006.