The Experts below are selected from a list of 174 Experts worldwide ranked by ideXlab platform

Peter Mccarthy - One of the best experts on this subject based on the ideXlab platform.

  • Collecting Vehicle-Speed Data by Using Time-Lapse Video Recording Equipment
    Transportation Research Record: Journal of the Transportation Research Board, 2003
    Co-Authors: Christopher Strong, Scott Lowry, Peter Mccarthy
    Abstract:

    An innovative application of time-lapse video Recording is used to assist in an evaluation of a highway safety improvement. The improvement is an icy-curve warning system near Fredonyer Summit in northern California that activates real-time motorist warnings via extinguishable message signs, based on weather readings collected from road weather information systems. A measure of effectiveness is whether motorist speed is reduced as a result of real-time warnings to drivers. Why indirect speed measurement with video was preferred over radar for this case is discussed, as is how specific methodological issues related to the custom-built Equipment, including camera location and orientation, distance benchmarking, and data collection and reduction. Theoretical and empirical accuracy measurements show that the video surveillance trailers yield results comparable to radar and, hence, would be applicable for studies in which speed change is measured. Because this particular technology had not been used previously, several lessons are documented that may help determine where and how similar Equipment may be optimally used in future studies.

  • Collecting Vehicle-Speed Data by Using Time-Lapse Video Recording Equipment
    Transportation Research Record, 2003
    Co-Authors: Christopher K Strong, Scott Lowry, Peter Mccarthy
    Abstract:

    An innovative application of time-lapse video Recording is used to assist in an evaluation of a highway safety improvement. The improvement is an icy-curve warning system near Fredonyer Summit in northern California that activates real-time motorist warnings via extinguishable message signs, based on weather readings collected from road weather information systems. A measure of effectiveness is whether motorist speed is reduced as a result of real-time warnings to drivers. Why indirect speed measurement with video was preferred over radar for this case is discussed, as is how specific methodological issues related to the custom-built Equipment, including camera location and orientation, distance benchmarking, and data collection and reduction. Theoretical and empirical accuracy measurements show that the video surveillance trailers yield results comparable to radar and, hence, would be applicable for studies in which speed change is measured. Because this particular technology had not been used previously...

Christopher K Strong - One of the best experts on this subject based on the ideXlab platform.

  • Collecting Vehicle-Speed Data by Using Time-Lapse Video Recording Equipment
    Transportation Research Record, 2003
    Co-Authors: Christopher K Strong, Scott Lowry, Peter Mccarthy
    Abstract:

    An innovative application of time-lapse video Recording is used to assist in an evaluation of a highway safety improvement. The improvement is an icy-curve warning system near Fredonyer Summit in northern California that activates real-time motorist warnings via extinguishable message signs, based on weather readings collected from road weather information systems. A measure of effectiveness is whether motorist speed is reduced as a result of real-time warnings to drivers. Why indirect speed measurement with video was preferred over radar for this case is discussed, as is how specific methodological issues related to the custom-built Equipment, including camera location and orientation, distance benchmarking, and data collection and reduction. Theoretical and empirical accuracy measurements show that the video surveillance trailers yield results comparable to radar and, hence, would be applicable for studies in which speed change is measured. Because this particular technology had not been used previously...

Vpl Inspiration Lab - One of the best experts on this subject based on the ideXlab platform.

Scott Lowry - One of the best experts on this subject based on the ideXlab platform.

  • Collecting Vehicle-Speed Data by Using Time-Lapse Video Recording Equipment
    Transportation Research Record: Journal of the Transportation Research Board, 2003
    Co-Authors: Christopher Strong, Scott Lowry, Peter Mccarthy
    Abstract:

    An innovative application of time-lapse video Recording is used to assist in an evaluation of a highway safety improvement. The improvement is an icy-curve warning system near Fredonyer Summit in northern California that activates real-time motorist warnings via extinguishable message signs, based on weather readings collected from road weather information systems. A measure of effectiveness is whether motorist speed is reduced as a result of real-time warnings to drivers. Why indirect speed measurement with video was preferred over radar for this case is discussed, as is how specific methodological issues related to the custom-built Equipment, including camera location and orientation, distance benchmarking, and data collection and reduction. Theoretical and empirical accuracy measurements show that the video surveillance trailers yield results comparable to radar and, hence, would be applicable for studies in which speed change is measured. Because this particular technology had not been used previously, several lessons are documented that may help determine where and how similar Equipment may be optimally used in future studies.

  • Collecting Vehicle-Speed Data by Using Time-Lapse Video Recording Equipment
    Transportation Research Record, 2003
    Co-Authors: Christopher K Strong, Scott Lowry, Peter Mccarthy
    Abstract:

    An innovative application of time-lapse video Recording is used to assist in an evaluation of a highway safety improvement. The improvement is an icy-curve warning system near Fredonyer Summit in northern California that activates real-time motorist warnings via extinguishable message signs, based on weather readings collected from road weather information systems. A measure of effectiveness is whether motorist speed is reduced as a result of real-time warnings to drivers. Why indirect speed measurement with video was preferred over radar for this case is discussed, as is how specific methodological issues related to the custom-built Equipment, including camera location and orientation, distance benchmarking, and data collection and reduction. Theoretical and empirical accuracy measurements show that the video surveillance trailers yield results comparable to radar and, hence, would be applicable for studies in which speed change is measured. Because this particular technology had not been used previously...

J. David Pye - One of the best experts on this subject based on the ideXlab platform.