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Method of representing road lanes

a technology of road lanes and methods, applied in the direction of navigation instruments, instruments, brake systems, etc., can solve the problems that the roads that are represented in databases used for navigation purposes may not be suitable for driver assistance and safety systems

Inactive Publication Date: 2005-01-06
HERE GLOBAL BV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] To address these and other objectives, the present invention includes a method and system representing road lanes as data in a database that can be used by a system in a vehicle to provide a safety-related function. Each data representation of a physical road lane includes data indicating start and end points of the represented lane and other data attributes pertaining to the represented lane, including data indicating what physical features are adjacent to the represented lane on right and left sides thereof and data indicating a geometry of the represented lane. Further, at least some of

Problems solved by technology

However, the ways that roads are represented in databases used for navigation purposes may not be suitable for driver assistance and safety systems.

Method used

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Examples

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Embodiment Construction

[0018] I. Exemplary Road Segment

[0019] A first embodiment relates to a method for representing roads, and in particular road lanes, in a database that contains data that represent a road network in a geographic region. The database is used by a system in a vehicle that provides safety or convenience features to the vehicle driver.

[0020]FIG. 1 shows an exemplary road segment 10, which is part of a road network located in a geographic region. The road segment 10 is comprised of a portion of a road between two adjacent intersections 12 and 14. Other road segments (not shown) connect to the intersections 12 and 14. The road segment 10 can be accessed by a vehicle from the other road segments via intersections 12 and 14.

[0021] The road segment 10 has several lanes in each direction. For example, the road segment 10 includes lanes 18, 20, 22, and 24 extending between the intersections 12 and 14. The lanes 18 and 20 are designed to carry vehicle traffic only in the direction from the in...

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PUM

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Abstract

A method is disclosed for representing road lanes as data in a database that can be used by a system in a vehicle to provide a safety-related function. Each data representation of a physical road lane includes data indicating start and end points of the represented lane and other data attributes pertaining to the represented lane, including data indicating what physical features are adjacent to the represented lane on right and left sides thereof and data indicating a geometry of the represented lane. Further, at least some of the data representations of lanes are associated with data representations of sublanes. Each data representation of a sublane includes data indicating start and end points thereof, defined relative to the lane of which the sublane is a part. A data representation of a sublane includes at least one data attribute associated therewith that pertains to the represented sublane and that is different than the same attribute of the lane of which the sublane is a part. The database is compatible with navigation-related applications that use a different data model to provide navigation-related functions.

Description

REFERENCE TO RELATED APPLICATIONS [0001] This present application is a continuation-in-part of the copending patent application Ser. No. 10 / 465,890, entitled “METHOD OF REPRESENTING ROAD INTERSECTIONS,” filed Jun. 19, 2003, the entire disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] The present invention relates to methods for representing roads as data in a database and more particularly, the present invention relates to methods for representing road lanes in a database used for vehicle driver assistance systems. [0003] Vehicle driver assistance systems, such as systems for obstacle warning and avoidance, lane departure warning, collision warning and avoidance, adaptive cruise control, adaptive transmission operation, automatic headlight aiming, and so on, have been developed to improve the safety and convenience of vehicle operation. These systems include technologies that augment a driver's ability to operate a vehicle safely and efficien...

Claims

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Application Information

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IPC IPC(8): G01C21/00G09B29/00G01C21/32G06T11/60G08G1/0969G09B29/10G16Z99/00
CPCY02T10/82G01C21/32G06F17/00G06F16/50G06F16/51G16Z99/00G01C21/367G01C21/26B60T8/17G06F16/00
Inventor WEILAND, MICHAELNYCZAK, GREGORYMCDONOUGH, WILLIAMTSENGOURAS, MICHAELSHUMAN, DAVIDFORD, PAUL
Owner HERE GLOBAL BV
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