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Work zone safety (Haathw)

Safety and security (H)
    Safety (Ha)
         Use For: Public safety; Safety measures
        Transportation safety (Haa)
             Related Term (Associative): ; Safety culture (Cos); Safety analysis (Hasa)
            Traffic safety (Haat)
                 Related Term (Associative): ; Traffic conflicts (Bthc)
                Highway safety (Haath)
                     Use For: Road safety
                    Work zone safety (Haathw)
                         Related Term (Associative): Shadow vehicles (Qtpbmq)