Patent ID: 8593300

Claim:
A vehicle approach warning system comprising: an in-vehicle communication apparatus to be mounted to a vehicle, the in-vehicle communication apparatus being configured to wirelessly transmit vehicle travel data to surroundings of the vehicle; and a portable warning terminal to be carried by a pedestrian, the portable warning terminal being configured to warn, in response to receiving the vehicle travel data wirelessly transmitted from the in-vehicle communication apparatus, the pedestrian about approach of the vehicle in a way other than auditory stimulation if electric field strength at a time of receiving the vehicle travel data is larger than a first threshold; wherein the in-vehicle communication apparatus identifies a road category to which a vehicle-travel-road belongs; the vehicle-travel-road is a road on which the vehicle is presently located; the in-vehicle communication apparatus puts information about the identified road category in the vehicle travel data; the portable warning terminal determines whether the road category indicated in the vehicle travel data meets a stored road category condition; and when the portable warning terminal determines that the road category indicated in the vehicle travel data does not meet the stored road category condition, the portable warning terminal prohibits warning about approach of the vehicle from being given to the pedestrian.