Abstract: A method of controlling traffic signals at a road intersection, which has a plurality of signal groups, each of which controls at least one direction of traffic within the intersection. The method comprises the steps of obtaining and utilizing traffic data to calculate a current traffic state and the rate of change in the traffic state. The method further comprises formulating at least one action and the duration of the action in response to these calculations. Each action comprises switching at least one traffic signal. One or more policies based on the calculations and the action are resolved. A continuous decision making process is applied to evaluate a reward for the policies resolved and a policy that maximizes the reward is selected.
Type:
Grant
Filed:
June 4, 2009
Date of Patent:
July 3, 2012
Assignee:
Roads and Traffic Authority of New South Wales
Inventors:
Nobuyuki Morioka, Eric Enyang Huang, Bernhard Hengst
Abstract: A method of controlling traffic signals at a road intersection, which has a plurality of signal groups, each of which controls at least one direction of traffic within the intersection. The method comprises the steps of obtaining and utilising traffic data to calculate a current traffic state and the rate of change in the traffic state. The method further comprises formulating at least one action and the duration of the action in response to these calculations. Each action comprises switching at least one traffic signal. One or more policies based on the calculations and the action are resolved. A continuous decision making process is applied to evaluate a reward for the policies resolved and a policy that maximizes the reward is selected.
Type:
Application
Filed:
June 4, 2009
Publication date:
December 31, 2009
Applicant:
Roads and Traffic Authority of New South Wales
Inventors:
Nobuyuki Morioka, Eric Enyang Huang, Bernhard Hengst
Abstract: A system for acquiring, processing, storing, analyzing and reporting data relating to the condition of a road or other pavement surface (102) in real time. The system includes a digital camera (104) mounted on a vehicle and positioned relative to a pavement surface (102) so as to capture images of the pavement surface (102) while the camera (104) is moving relative to the surface (102). The system also includes an illumination assembly (100) to illuminate the region from which an image is taken and an interface between the digital camera (104) and at least one computer. The system also includes a processor in the computer for processing the images to detect and classify cracks and other pavement surface (102) features.
Type:
Grant
Filed:
September 25, 2000
Date of Patent:
September 9, 2003
Assignees:
The Roads and Traffic Authority on New South Wales, Commonwealth Scientific and Industrial Research
Organisation
Inventors:
Ronald Allan Ferguson, David Norman Pratt, Paul Richard Turtle, Ian Barry Macintyre, Daniel Peter Moore, Patrick Dale Kearney, Michael John Best, James Laurie Gardner, Mark Berman, Michael James Buckley, Joseph Edmond Breen, Ronald Jones
Abstract: A vehicle inspection facility comprises a horizontal base frame supporting a pair of brake testing sub-assemblies. Each sub-assembly comprises a driven roller and a companion roller, and includes means for rotating the driver roller for rotating the wheels of a vehicle being tested and means for measuring the braking force applied by the vehicle brakes against the driven roller. Also included is a vehicle suspension and steering testing assembly comprising a pair of horizontal supporting surfaces for supporting the vehicle front wheels and including means for producing reciprocal motion of the supporting surfaces along perpendicular directions to determine the degree of "play" of the wheels.
Type:
Grant
Filed:
April 26, 1991
Date of Patent:
September 22, 1992
Assignee:
Roads & Traffic Authority of New South Wales
Inventors:
Rodney G. Vaughan, Russell K. Findlay, Ivan Jakabek, Ralph Richardson, Myles J. McLachlan, Geoffrey C. Venn-Brown