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Approach roads (Pmrccnd)

Facilities (P)
     Use For: Complexes; Installations
    Transportation, hydraulic and utility facilities (Pm)
        Highway facilities (Pmr)
             Related Term (Associative): Underground structures (Pdv); Bridges and culverts (Pdy)
            Roads (Pmrc)
                Types of roads (Pmrcc)
                    Types of roads by network (Pmrccn)
                        Access roads (Pmrccnb)
                             Related Term (Associative): 
                        Approach roads (Pmrccnd)
                             Use For: Slip roads
                        Beltways (Pmrccnf)
                             Use For: Belt highways; Circumferential highways; Loops (Highways); Ring roads
                        Bypasses (Pmrccnj)
                        Highway corridors (Pmrccnm)
                             Use For: Traffic corridors
                        Radial highways (Pmrccnr)