Pedestrians and traffic-control measures
Pedestrians and traffic-control measures
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- Washington, D.C. Transportation Research Board 1988
- 76 p.
- TRB NCHRP SHP 139 : 1988 .
Transportation safety, Human factors, Operations and traffic control
LTRB NCHRP SHP 139 : 1988
Transportation safety, Human factors, Operations and traffic control
LTRB NCHRP SHP 139 : 1988