A control vehicle for a road toll system on the basis of vehicle-mounted onboard units which can be polled via DSRC radio communications, with the control vehicle comprising at least one DSRC transceiver with at least two antenna systems, which are distributed with a mutual distance over the longitudinal direction of the control vehicle, for polling a passing on-board unit. The second transparent substrate is disposed in parallel to the first transparent substrate. From the projected workscope mix, labor, supplies, and monetary estimates for maintenance procedures may be calculated. The lubricating oil is supplied to the bearing by a capillary action of the wick member. The invention is characterized in that the comparative result is output by the authentification device over the local node to the access control and the result of the comparison is communicated by the access control to the user over the local node, signals sent by the authentification device being masked. The photocoupler controls the current to be supplied to the LED in accordance with the reflected light by the half mirror to uniformize the light emission intensity of the LED.