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

Sonraí bibleagrafaíochta
Údair chorparáideacha:	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
Formáid:	LEABHAR
Teanga:	English
Foilsithe / Cruthaithe:	Washington Highway Research Board, National Research Council D.C., 1970.
Sraith:	Highway research record no. 308.
Ábhair:	Roads > Guard fences. Roads > Crash cushions. Traffic signs and signals > Break-away supports. Guardrails. Luminaires. Geometric design.