Traffic signal control using vehicle trajectory data
AssigneeThe Regents of the University of Michigan
InventorsXianghong LIU, Jianfeng ZHENG
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Abstract
A system and method for use in controlling traffic signaling devices located along public roadways. The method carried out by the system includes: receiving, at one or more computers, time-location (TL) data from a plurality of wirelessly connected devices traveling through an intersection of a public roadway; determining, by the one or more computers using the received TL data, a traffic volume estimation value representative of a volume of traffic at the intersection; and sending the traffic volume estimation value to a traffic signaling control system configured to control a traffic signaling device at the intersection based on the traffic volume estimation value.
Claims16
A method for use in controlling traffic signaling devices located along public roadways, comprising the steps of:
- (a) receiving, at one or more computers, time-location (TL) data from a plurality of wirelessly connected devices traveling through an intersection of a public roadway;
- (b) determining, by the one or more computers using the received TL data, a traffic volume estimation value representative of a volume of traffic at the intersection;
- and
- (c) sending the traffic volume estimation value to a traffic signaling control system configured to control a traffic signaling device at the intersection based on the traffic volume estimation value.
A computer-based system for use in controlling traffic signaling devices located along public roadways, comprising one or more computers that include one or more electronic processors and one or more computer programs stored on non-transitory computer-readable medium, the one or more computer programs being configured upon execution by the one or more processors to:
- (a) receive time-location (TL) data from a plurality of wirelessly connected devices traveling through an intersection of a public roadway;
- (b) determine using the received TL data, a traffic volume estimation value representative of a volume of traffic at the intersection;
- and
- (c) send the traffic volume estimation value to a traffic signaling control system configured to control a traffic signaling device at the intersection based on the traffic volume estimation value.
A method for use in controlling traffic signaling devices located along public roadways, comprising the steps of:
- (a) receiving global navigation satellite system (GNSS) information that includes location and time data at a remote facility from a plurality of connected vehicles traveling along roadways that are interconnected at intersections;
- (b) determining, for each of at least some of the plurality of connected vehicles, a trajectory using the GNSS information;
- (c) receiving a set of traffic signal statuses, wherein the set of traffic signal statuses indicate the traffic signal status for traffic signals at at least some of the intersections, and wherein the one or more traffic signal statuses are each associated with a status time value;
- (d) associating the trajectories with the set of traffic signal statuses according to the status time value and the time data from the GNSS information;
- and
- (e) determining a traffic volume estimation value based on the associated trajectories and set of traffic signal statuses.
Dependencies are inferred from the claim text.