A control system for positioning a marker over a pre-existing roadway surface mark. The control system has an electromagnetic radiation source attached to the marker for producing a mark pattern on the roadway surface. An imager permits the control system to image both the pre-existing roadway surface mark and the mark pattern produced by the electromagnetic radiation source. A computer is responsive to the imager for producing an error signal based upon the location difference between (a) the image of the pre-existing roadway surface mark and (b) the image of the mark pattern produced by the electromagnetic radiation source. An actuator is responsive to the error signal for positioning the marker over the pre-existing.

A line scribing method of a line scriber includes the steps of providing an electronic map; planning a line scribing path on the electronic map; converting the planned line scribing path into a plurality of planned geographical coordinates; transmitting the planned geographical coordinates to a line scriber; positioning a location to be scribed by the line scriber via a satellite connection to generate a positioning coordinate; comparing the positioning coordinate with an starting geographical coordinate of the planned geographical coordinates, and correcting the planned geographical coordinates according to the difference between the positioning coordinate and the starting geographical coordinate if the positioning coordinate is unequal to the starting coordinate, or moving the line scriber according to the planned geographical coordinates sequentially to perform a line scribing operation if the positioning coordinate is equal to the starting coordinate, so that the line scriber can perform a line scribing operation accurately.

A line scribing method of a line scriber includes the steps of providing an electronic map; planning a line scribing path on the electronic map; converting the planned line scribing path into a plurality of planned geographical coordinates; transmitting the planned geographical coordinates to a line scriber; positioning a location to be scribed by the line scriber via a satellite connection to generate a positioning coordinate; comparing the positioning coordinate with an starting geographical coordinate of the planned geographical coordinates, and correcting the planned geographical coordinates according to the difference between the positioning coordinate and the starting geographical coordinate if the positioning coordinate is unequal to the starting coordinate, or moving the line scriber according to the planned geographical coordinates sequentially to perform a line scribing operation if the positioning coordinate is equal to the starting coordinate, so that the line scriber can perform a line scribing operation accurately.

An apparatus for locating, inspecting, or placing marks on a roadway. The apparatus includes a GPS-based machine vision locator for sampling discrete geographical location data of a pre-existing roadway mark evident on the roadway. A computer may determine a continuous smooth geographical location function fitted to the sampled geographical location data. A marker is responsive to the GPS-based locator and geographical location function for replicating automatically the pre-existing roadway mark onto the roadway. The apparatus is typically part of a moving vehicle. A related method is disclosed for locating, inspecting, and placing marks on a resurfaced roadway. A similar apparatus can be used to guide a vehicle having a snow plow along a snow-covered roadway, or a paving machine along an unpaved roadway surface. The apparatus provides for accurate determination of roadway mark locations, roadway mark inspection apparatus and roadway markers using Bayesian model-based filtered enhanced GPS geographical location data.

A hot applied thermoplastic pavement composition and method of using is described wherein the composition comprises; a modified polyamide resin in the range of between 3 and 10 percent by weight, wherein the composition contains rosin-modified esters, a copolymer, 30-70 percent by weight of a glass bead intermix, a range of between 1 and 15 percent by weight of either white or yellow pigment, the balance of the composition being selected from the group consisting of; one or more plasticizers, inorganic fillers, waxes, antioxidants and light stabilizers.

A system for striping a roadway marking onto roadway surface either for rehabilitating the current roadway marking or duplicating a previously recorded roadway marking with a computer having a machine learning program to process the roadway marking image and position the marker at the desired roadway marking location.

An image generation apparatus includes a processor that generates an output image based on input images captured by multiple imaging units mounted on a paver including a hopper, a tractor, and a screed. The output image includes a hopper image representing a downward view of the hopper, a left-side surrounding image representing a downward view of a surrounding area on the left side in a movement direction of the paver, a right-side surrounding image representing a downward view of a surrounding area on the right side in the moving direction of the paver, and an illustration image of the tractor. The processor arranges the hopper image, the left-side surrounding image, the right-side surrounding image, and the illustration image such that the output image represents a downward view of the paver.

A line marking device (1) comprising a cart (2) with at least one steerable wheel (3) and at least two moving elements (4, 5). The steerable wheel (3) is rotatable around its axle (13) and pivotable such that the cart (2) is steered in a desired direction. The line marking device (1) comprises a GNSS receiver (7) or a robotic total station mounted on the cart (2). The line marking device (1) also comprises at least one spray nozzle (8), for marking a line, which is mounted on the cart and directed towards the ground below the line marking device (1). The device (1) comprises an interface mounted on the cart for a comparator to compare a detected location by the GNSS receiver (7) to a predetermined pattern. The cart (2) may comprise a motor (14) which is adapted to pivot the steerable wheel (3) towards an intended movement.

A method of marking a line includes providing a line marking apparatus including a body (21), a line marking head (29) movable relative to the body, and a positioning system (35, 37, 41, 43) for determining a geographical location of the line marking head. In addition, a mathematical model is provided for a line to be marked by the line marking head, the model being cumulatively updated in response to a position fix (61) obtained by the positioning system. The position of the line marking head is adjusted relative to the body in dependence upon the mathematical model.

An attachment system is provided for attaching an external component to a chassis of a vehicle, such as components for performing snow clearance, road measurements, road surface marking assemblies, transport of vehicles or gear, including salvaging work and transport of heavy duty vehicles. The attachment system includes at least an elongated chassis coupler element, a fastening mechanism for fastening the chassis coupler element to the chassis when in a mounted position, a distance element, and a clamping mechanism. The coupler element is shaped to fit inside a hollow space of the distance element, and the clamping mechanism is operable to control an insertion length of the coupler element into the hollow space thereby controlling the clamping of the distance element and the chassis when the attachment device is in a mounted position.