Abstract: An improved technique for regulating the contact pressure of a pantograph brush on an overhead guide conductor is described. The brush is supported for vertical movement in a brush support member for adjustable wiping contact with the overhead conductor. The brush support member is in turn supported for movement in a vertical plane via a two-arm scissors arrangement which is supportable on the roof of an electric vehicle. A high-frequency signal picked up by a transducer situated in the area of the brush and representative of the instantaneous contact pressure of the brush on the wire is compared with an adjustable reference indication indicative of a desired contact pressure, and the resulting difference signal is employed to incrementally adjust the brush contact pressure.