Patent ID: 6577943
Filing Date: 2003-06-10
Classification: G08G

Abstract:
A system for distributing road surface information comprising:means for sensing numerical information on slipperiness of a road surface while a vehicle is travelling; means for sensing positional information of the travelling vehicle; means for transmitting the numerical information and/or positional information from the vehicle; means for collecting the information transmitted by a plurality of vehicles; means for preparing road surface information of a road on the basis of each information; means for distributing the road surface information also to a vehicle other than the vehicle; means for receiving the distributed road surface information; and means for correcting the numerical information on the slipperiness of the road surface that the vehicle has received by comparing the numerical information on the slipperiness of the road surface that the vehicle has received with the numerical information on a road surface friction coefficient that the vehicle has sensed while travelling.