Method and system for representing traffic signals in a road network database
First Claim
1. A database that represents roads comprising:
- a plurality of traffic signal cluster data structures, wherein each traffic signal cluster data structure includes data representing one or more traffic signals that operate with phases at an intersection to control one or more intersection maneuvers for traffic entering the intersection from a particular road, wherein each of the one or more intersection maneuvers is common to each of the one or more traffic signals in each traffic signal cluster data structure; and
data indicating the one or more intersection maneuvers.
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Abstract
A method and system for representing traffic control signals in a road network database is provided. The database may include lane-level modeling, intersection modeling, and traffic signal modeling of a road network. An individual traffic signal is represented in the database with data indicating the traffic signal'"'"'s geographic location and other attributes of the traffic signal such as an arrangement of lenses in the signal, an indication as to whether the signal is vertically or horizontally oriented, a height of the traffic signal over the roadway, and others. The database can be used by a system in a vehicle that provides convenience features to the vehicle'"'"'s driver. The system may attempt to warn or control a vehicle that is determined to be at imminent risk of violating a traffic signal.
44 Citations
20 Claims
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1. A database that represents roads comprising:
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a plurality of traffic signal cluster data structures, wherein each traffic signal cluster data structure includes data representing one or more traffic signals that operate with phases at an intersection to control one or more intersection maneuvers for traffic entering the intersection from a particular road, wherein each of the one or more intersection maneuvers is common to each of the one or more traffic signals in each traffic signal cluster data structure; and data indicating the one or more intersection maneuvers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for representing traffic signals in a road database comprising:
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identifying a first set of one or more physical traffic signals located at an intersection that, with a common first set of phases, control one or more intersection maneuvers for traffic entering the intersection from a particular road, wherein each of the one or more intersection maneuvers is common to each of the one or more traffic signals in the first set of one or more physical traffic signals; storing in the road database a first traffic signal cluster data entity that identifies the first set of one or more physical traffic signals; identifying a second set of one or more physical traffic signals located at the intersection that, with a common second set of phases different from the first set of phases, control one or more intersection maneuvers for traffic entering the intersection from the particular road; and storing in the road database a second traffic signal cluster data entity that identifies the second set of one or more physical traffic signals. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method for representing traffic signals in a road database comprising:
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identifying a first set of one or more physical traffic signals located at an intersection that, with a common first set of phases, control one or more intersection maneuvers for traffic entering the intersection from a particular road, wherein each of the one or more intersection maneuvers is common to each of the one or more traffic signals in the first set of one or more physical traffic signals, and wherein each of the one or more intersection maneuvers is associated with only one set of one or more physical traffic signals; storing in the road database a first traffic signal cluster data entity that identifies the first set of one or more physical traffic signals; identifying a second set of one or more physical traffic signals located at the intersection that, with a common second set of phases different from the first set of phases, control one or more intersection maneuvers for traffic entering the intersection from the particular road, wherein each of the one or more intersection maneuvers is common to each of the one or more traffic signals in the second set of one or more physical traffic signals, and wherein each of the one or more intersection maneuvers is associated with only one set of one or more physical traffic signals; and storing in the road database a second traffic signal cluster data entity that identifies the second set of one or more physical traffic signals. - View Dependent Claims (17, 18, 19, 20)
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Specification