System-wide safety improvements : an approach to safety consistency /
Benjamin V. Chatfield ; topic panel, Forrest M. Council ... [et al.].
- Washington, D.C. : Transportation Research Board, National Research Council, [1987]
- 20 p. : ill. ; 28 cm.
- Synthesis of highway practice / National Cooperative Highway Research Program, 132 0547-5570 ; .
- Synthesis of highway practice ; 132. .
"Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration." "September 1987."