Patent ID: 6324470
Filing Date: 2001-11-27
Classification: G01C,Y10S

Abstract:
A method of representing restricted driving maneuvers that involve several connected road segments for a geographic database, wherein the several connected segments include at least three connected road segments, and wherein said several connected road segments include an entrance road segment, an exit road segment and at least one intermediate road segment, and wherein continuous travel from the entrance road segment onto the exit road segment via the intermediate road segment is prohibited, the method comprising:forming an instance of data representing the entrance road segment;forming an instance of data representing the exit road segment; andforming multiple instances of data representing the intermediate road segment,wherein a first of said multiple instances of data representing the intermediate road segment can be used to determine a valid driving path from the entrance road segment to the intermediate road segment but cannot be used to determine a valid driving path from the intermediate road segment onto the exit road segment, andwherein a second of said multiple instances of data representing the intermediate road segment can be used to determine a valid driving path from the intermediate road segment to the exit road segment but cannot be used to determine a valid driving path from the entrance road segment onto the intermediate road segment.