Geometric design protective barrier systems; luminaire supports : 6 reports.

Manylion Llyfryddiaeth
Awduron Corfforaethol:	National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, National Research Council (U.S.). Committee on Geometric Highway Design, National Research Council (U.S.). Committee on Guardrail, Median Barriers and Sign, Signal and Lighting Supports
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Washington Highway Research Board, National Research Council D.C., 1970.
Cyfres:	Highway research record no. 308.
Pynciau:	Roads > Guard fences. Roads > Crash cushions. Traffic signs and signals > Break-away supports. Guardrails. Luminaires. Geometric design.