Electronic vertical clearance advertisement safety system

摘要

A method includes electronically advertising structural clearance information of overpasses to an oncoming vehicle so as to determine a continued route of the vehicle. Each of the overpasses includes a transceiver. The transceiver of each overpass other than a final overpass sequentially transmits information to the transceiver of a nearest respective overpass in a direction facing the vehicle. The transceiver of an initial overpass transmits information which includes a minimum vertical clearance beneath the initial overpass. The transceiver of each overpass other than the initial overpass compares a minimum vertical clearance beneath its corresponding overpass with a minimum vertical clearance received from the transceiver of a respective preceding overpass and determines a lowest minimum vertical clearance. The transceiver of the final overpass transmits information to the oncoming vehicle. The information transmitted from the transceiver of each overpass other than the initial overpass includes the lowest minimum vertical clearance determined by the corresponding transceiver.