| 摘要 |
Radio beacon for a wireless road toll system, comprising a transceiver, which is arranged for packet-type radio communication with onboard units of passing vehicles, with at least one camera for recording an image of a passing object and a control device connecting to the transceiver and the camera, which control device is configured to measure, in conjunction with the transceiver, the number of data packets received per unit time from a specific onboard unit and, in the case of a number exceeding a threshold value, to actuate the camera to record an image of the object carrying this onboard unit.
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