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Mainline metering (Dcmthcfm)

Communication and control (D)
    Control (Dc)
         Use For: Control theory
        Control system applications (Dcm)
            Traffic control (Dcmt)
                 Related Term (Associative): Traffic (Bt)
                Highway traffic control (Dcmth)
                     Use For: Street traffic control; Traffic management (Traffic control); Vehicular traffic control
                     Related Term (Associative): ; Highway operations (Bqd); Motor vehicle operations (Brd); Traffic engineering (Ttkfwt)
                    Highway traffic control systems (Dcmthc)
                        Freeway management systems (Dcmthcf)
                             Use For: Freeway traffic control
                             Related Term (Associative): Automatic incident detection (Dmbytjb)
                            Mainline metering (Dcmthcfm)
                            Ramp metering (Dcmthcfr)
                                 Use For: Ramp control
                                 Related Term (Associative): Freeway operations (Bqdo); Traffic signals (Dcmthrrs); Merging control (Dcmvgp)