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55 mph speed limit (Crftrsa)

Management and organization (C)
     Related Term (Associative): Transportation operations (B); Information organization (X)
    Policy, legislation and regulation (Cr)
         Related Term (Associative): 
        Regulation (Crf)
            Regulations (Crft)
                Traffic regulations (Crftr)
                     Related Term (Associative): ; Regulatory signs (Dcmthrkbr)
                    Speed limits (Crftrs)
                         Related Term (Associative): Traffic calming (Cratutc)
                        55 mph speed limit (Crftrsa)
                        65 mph speed limit (Crftrsb)
                        Variable speed limits (Crftrsc)
                             Related Term (Associative):