On-Line
HSM.
Introduction to the HSM Video produced by AASHTO.
FHWA Crash Modification Factors Clearinghouse.
Publications
FHWA, 2011. HSM Training Guide, Federal Highway Administration: Office of Safety.
NCHRP Synthesis 316, Design Exception Practices.
NCHRP Research Results Digest 306, Identification of Liability-Related Impediments to Sharing Section 409 Safety Data Among Transportation Agencies and A Synthesis of Best Practices.