Guardrails, barriers, and sign supports 5 reports.

Guardrails, barriers, and sign supports 5 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.). Highway Research Board. Committee on Guardrails, Median Barriers, and Sign, Signal, and Lighting Supports
Fformat: Llyfr
Iaith:English
Cyhoeddwyd: Washington, D.C. Highway Research Board 1967.
Cyfres:Highway research record no. 174.
Publication (National Research Council (U.S.)) no. 1505.
Pynciau:
Roads > Guard fences.
Traffic signs and signals > Break-away supports.