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Roadway work area safety truck

  • US 10,319,227 B2
  • Filed: 03/06/2018
  • Issued: 06/11/2019
  • Est. Priority Date: 06/29/2015
  • Status: Active Grant
First Claim
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1. A roadway work site safety truck comprising:

  • a display board connected to a rear portion of the safety truck, the display board comprising;

    a speed detection radar to detect a speed of a vehicle approaching the safety truck from behind the safety truck;

    at least one display device operable to display at least a textual message readable from behind the safety truck; and

    a display board camera able to capture an image of the approaching vehicle;

    a truck-mounted attenuator (TMA) connected to the rear portion of the safety truck, and movable between a stowed position for travel of the safety truck along the roadway and a deployed position to enhance safety of the roadway work site in which the TMA extends rearward from the safety truck to absorb kinetic energy of the approaching vehicle colliding with the TMA at the rear of the safety truck; and

    a controller comprising;

    a processor;

    a recording storage comprising at least one non-volatile storage device to store imagery captured by the display board camera;

    an accelerometer to detect a characteristic of an acceleration indicative of the approaching vehicle colliding with the TMA at the rear of the safety truck; and

    an operation storage to store instructions that cause the processor to perform operations comprising;

    receive an indication of a speed of the approaching vehicle from the speed detection radar;

    receive video captured by the display board camera of the approaching vehicle;

    overlay a textual indication of the speed of the approaching vehicle onto frames of the captured video of the approaching vehicle;

    store the captured video with the overlain textual indication in the recording storage as recorded video;

    receive an indication of detection of the characteristic of an acceleration indicative of the approaching vehicle colliding with the TMA at the rear of the safety truck;

    in response to receipt of the indication, store, in the recording storage, a timestamp indicating a time and date at which the indication is received; and

    refrain from overwriting a portion of the recorded video that was captured starting at a first predetermined period of time leading up to the time and date of the time stamp and ending at a second predetermined period of time following the time and date of the time stamp.

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