Patent ID: 6076040
Filing Date: 2000-06-13
Classification: G01S,G08G

Abstract:
A vehicle running position detecting system comprising:receiving means mounted on a vehicle for receiving signals transmitted from a first transmission unit and a second transmission unit placed so as to face each other with a lane of a road between, said first transmission unit and said second transmission unit transmitting the signals toward the lane in predetermined areas of the lane; andposition identifying means for identifying a position of said vehicle in a width direction of the road based on states of the signals received by said receiving means, said position identifying means comprising:first means for detecting a level of the signal received from said first transmission unit by said receiving means;second means for detecting a level of the signal received from said second transmission unit by said receiving means; andthird means for determining the position of the vehicle based on the levels of the signals detected by said first means and said second means, wherein said third means includes a table indicating a relationship between a set of levels detected by said first means and said second means and a position of the vehicle in the width direction of the road, said third means determining, with reference to the table, the position corresponding to a set of levels detected by said first means and said second means.