Method and apparatus for representing road intersections
First Claim
1. A method for representing intersections with a road database comprising:
- storing in the road database intersection object data entities that represent physical road intersections, wherein each intersection object data entity includes a maneuver list that contains entries that identify all permissible traversals of the intersection to all lanes from which the intersection can be legally exited from each one of all the lanes by which the intersection can be entered, wherein each entry in the maneuver list indicatesa lane into the intersection;
a lane out of the intersection; and
a geometry indicating a vehicle path connecting the lane into the intersection and the lane out of the intersection, andwherein at least some of the physical road intersections represented in the road database have a configuration in which multiple lanes exiting an intersection are legally accessible from a single lane entering the intersection and for such intersections the maneuver list identifies the permissible traversals to said multiple lanes from said single lane.
5 Assignments
0 Petitions
Accused Products
Abstract
A method is disclosed for representing road intersections as data. A database includes intersection object data entities that represent physical road intersections. Each intersection object data entity includes a maneuver list that identifies each permissible transversal of the intersection from each lane by which the represented intersection can be entered to each lane from which the intersection can be exited from the associated lane by which the intersection can be entered. Each transversal in the maneuver list indicates an entry lane, an exit lane, the geometry of a vehicle path connecting the entry and exit lanes, and an indication of a level of confidence associated with the specified geometry. The database can be used by a system in a vehicle to provide a safety-related function. The database is compatible with navigation-related applications that use a different data model to provide navigation-related functions.
36 Citations
20 Claims
-
1. A method for representing intersections with a road database comprising:
-
storing in the road database intersection object data entities that represent physical road intersections, wherein each intersection object data entity includes a maneuver list that contains entries that identify all permissible traversals of the intersection to all lanes from which the intersection can be legally exited from each one of all the lanes by which the intersection can be entered, wherein each entry in the maneuver list indicates a lane into the intersection; a lane out of the intersection; and a geometry indicating a vehicle path connecting the lane into the intersection and the lane out of the intersection, and wherein at least some of the physical road intersections represented in the road database have a configuration in which multiple lanes exiting an intersection are legally accessible from a single lane entering the intersection and for such intersections the maneuver list identifies the permissible traversals to said multiple lanes from said single lane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A database that models roads, wherein the database is stored on a computer-readable medium, the database comprising:
-
data entities that represent lanes of road segments, including data indicating physical configuration properties of the lanes, including locations of the lanes and which roads the lanes are associated with; and intersection object data entities that represent physical configuration properties of intersections, wherein each intersection object data entity includes a maneuver list that identifies all permissible traversals of a represented intersection to all lanes from which the intersection can be exited from each one of all the lanes by which the intersection can be entered, and wherein at least some of the intersections represented in the database have a configuration in which multiple lanes exiting an intersection are legally accessible from a single lane entering the intersection and for such intersections the maneuver list identifies the permissible traversals to said multiple lanes from said single lane. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification