TY - GEN AU - Neuman, Timothy R. TI - NCHRP Report 500 Guidance for Implementation of the AASHTO Strategic Highway Safety Plan Vol 20 : A Guide for Reducing Head on Crashes on Freeways SN - 9780309099363 SN - 00775614 U1 - 363.125 NEU PY - 2008/// CY - Washington PB - Transportation Research Board KW - Highway safety Plan ER -