TY - GEN TI - Highway safety design and operations guide, 1997 SN - 1560510412 U1 - 363.12572 AAS PY - 1997/// CY - Washington, D.C. PB - American Association of State Highway and Transportation Officials KW - Traffic safety KW - United States KW - Roads KW - Design and construction KW - Safety measures KW - Highway engineering KW - Express highways KW - Rural roads ER -