Guardrails, median barriers, and sign and light supports 6 reports.

Guardrails, median barriers, and sign and light supports 6 reports.

Библиографические подробности
Соавтор: National Research Council (U.S.). Committee on Guardrails, Median Barriers, and Sign, Signal, and Lighting Supports
Формат: ‌
Язык:English
Опубликовано: Washington, D.C. Highway Research Board, National Research Council 1968.
Серии:Highway research record no. 222.
Предметы:
Roads > Guard fences.
Traffic signs and signals > Break-away supports.