ROAD LINEAR DESIGN METHOD, DEVICE, AND PROGRAM

PROBLEM TO BE SOLVED: To reduce searching time and labor costs by the automatic search of a linear road and also reduce an enormous search range by a few number of parameters and geographical limitation. SOLUTION: The inside of an imaginary space including a start point and a terminal of a section in which a linear road is planned to design is set by inputting a planned linear shape of a road to be designed and a further restricted specified search range in the imaginary space is set. A plurality of passing points respectively defined by five parameters of three dimensional coordinates, a tangential directional angle, and an inclination while satisfying various restrictive conditions between the start point and the terminal are preset within the further searching range in the imaginary space. By use of a specified algorithm, the gap from the start point to the terminal, passing all passing points in the imaginary space is connected. A plane linear and a vertical disconnection shape can be simultaneously optimized by setting linear road formed of three dimentional imaginary line segments including curves and lines. COPYRIGHT: (C)2004,JPO