公开(公告)号：US20250085135A1

公开(公告)日：2025-03-13

申请号：US18827185

申请日：2024-09-06

Applicant: Cambridge Mobile Telematics Inc.

Inventor： John Collins ,  Jun-Geun Park ,  Ruilin Chen ,  Patrick Steele ,  Hari Balakrishnan ,  Yulan Liang

IPC: G01C21/00 ,  G06N3/042 ,  G08G1/16

Abstract: Techniques for measuring extrinsic crash risk are provided. In some examples, a plurality of segments are instantiated in a road segment datastore, with each segment corresponding to a physical road segment in a geographic area and including segment attributes derived from digital map data as well as a risk attribute. From the digital map data, pairs of physical road segments that intersect are determined such that each pair has a corresponding pair of segments in the road segment datastore, and each segment is included in at least one pair. A connection between each segment in each pair is created in the datastore comprising connectivity attributes derived from the digital map data. Based on the segment attributes for a segment, as well as the one or more paired segments and their connectivity attributes, the risk attribute for each segment is updated in the road segment datastore.