Update of NCHRP report 230 recommended procedures for the safety performance evaluation of highway appurtenances.
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| Формат: |  | 
| Язык: | English | 
| Опубликовано: | Washington, D.C.
          Transportation Research Board
    
        [1990] | 
| Серии: | Transportation Research Circular
              Number 374 | 
| Предметы: |