Patents by Inventor Haoxiang Howell Li

Haoxiang Howell Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of identifying vehicle turning movements at intersections from trajectory data and reallocating green time therefor
    Patent number: 11915585
    Abstract: A method of generating an output movement layout for a traffic intersection is disclosed which includes receiving intersection geographical data, establishing a center point for the intersection, receiving vehicle global positioning system (GPS) data, establishing a radius of interest for the intersection based on the received vehicle GPS data, establishing entry and exit headings for each vehicle based on the GPS data, generating an angular cluster chart based on the entry and exit headings of each vehicle, and generating an output movement layout for the intersection based on the generated angular cluster chart. Further, a method for green time reallocation at traffic signals is disclosed that is based on the congestion experienced by vehicles identified as following specific movements.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: February 27, 2024
    Assignee: Purdue Research Foundation
    Inventors: Enrique Daniel Saldivar Carranza, Haoxiang Howell Li, Darcy Bullock
  • METHOD OF IDENTIFYING VEHICLE TURNING MOVEMENTS AT INTERSECTIONS FROM TRAJECTORY DATA AND REALLOCATING GREEN TIME THEREFOR
    Publication number: 20230019772
    Abstract: A method of generating an output movement layout for a traffic intersection is disclosed which includes receiving intersection geographical data, establishing a center point for the intersection, receiving vehicle global positioning system (GPS) data, establishing a radius of interest for the intersection based on the received vehicle GPS data, establishing entry and exit headings for each vehicle based on the GPS data, generating an angular cluster chart based on the entry and exit headings of each vehicle, and generating an output movement layout for the intersection based on the generated angular cluster chart. Further, a method for green time reallocation at traffic signals is disclosed that is based on the congestion experienced by vehicles identified as following specific movements.
    Type: Application
    Filed: June 30, 2022
    Publication date: January 19, 2023
    Applicant: Purdue Research Foundation
    Inventors: Enrique Daniel Saldivar Carranza, Haoxiang Howell Li, Darcy Bullock
  • Methods and systems for real-time advanced congestion identification and warning
    Patent number: 9852622
    Abstract: The present disclosure relates to a system and method for locating slow or stopped vehicles on a roadway and alerting drivers approaching the back of a queue, and in particular to intelligent transportation systems and traffic management.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: December 26, 2017
    Assignee: Purdue Research Foundation
    Inventors: Darcy M Bullock, Stephen M Remias, Haoxiang Howell Li
  • METHODS AND SYSTEMS FOR REAL-TIME ADVANCED CONGESTION IDENTIFICATION AND WARNING
    Publication number: 20160071412
    Abstract: The present disclosure relates to a system and method for locating slow or stopped vehicles on a roadway and alerting drivers approaching the back of a queue, and in particular to intelligent transportation systems and traffic management.
    Type: Application
    Filed: September 3, 2015
    Publication date: March 10, 2016
    Applicant: PURDUE RESEARCH FOUNDATION
    Inventors: Darcy M Bullock, Stephen M Remias, Haoxiang Howell Li