Equipment for collecting information from vehicles moving through a lane on a roadway is positioned over the roadway using a track structure and a transfer device. The transfer device is adapted to mount and move the equipment between a first location and a second location along the track structure. A mounting structure, such as a gantry, may be used to support the track structure and/or equipment over the lanes on the roadway. A pulley system may be disposed in the track structure to move the transfer device. Also, a displacing device to raise the equipment relative to the track structure when the equipment is being moved along the track may be used. Alternatively, the transfer device may be mounted in an offset configuration to move the equipment between locations without the use of a displacing device.