Patent ID: 9109919
Filing Date: 2015-08-18
Classification: G01C,G09B

Abstract:
1. A curved-section-information supplying apparatus that supplies curved-section information regarding a clothoid section included in a curved section of a road, the curved-section-information supplying apparatus comprising: a clothoid-section identifying means for identifying a clothoid section included in a curved section of a road; a clothoid-coefficient obtaining means for obtaining a clothoid coefficient for a clothoid curve representing a shape of the clothoid section identified by the clothoid-section identifying means; and a radius-of-curvature calculating means for calculating a radius of curvature at a position at a travel distance in the clothoid section, based on the clothoid coefficient and a curve length from a start point of the clothoid curve, the curve length corresponding to the travel distance from a start point of the clothoid section, to supply curved-section information based on the radius of curvature at the position at the travel distance in the clothoid section.