The invention relates to a ground surface marker and method for surface marking. It is known to apply surface markings, for example road markings, using paint. Many current road marking paints have a touch dry time from about five minutes to one hour, with full drying taking 24 hours or more, depending on the air temperature. The dry time of current paints can delay the opening of a road which may be costly because it increases the need for traffic control and can expose contractors to motoring hazards. If roads are opened prior to full drying of the paint, then the road markings may be compromised by contact with vehicle wheels. The invention aims to go at least some way toward addressing these problems by providing a ground surface marker comprising a paint applicator, a dispenser associated with reflectors, and a UV light source.

A work vehicle system configured of a plurality of work vehicles performing work relating to magnetic markers to be laid on a road surface so as to be detectable by a magnetic sensor attached to a bottom surface side of a vehicle in order to achieve vehicle-side control for assisting driving operation of the vehicle by a driver or automatic driving not relying on operation of the driver, including a target acquisition apparatus which acquires a control target for travelling along a laying line where the magnetic markers are to be laid, an automatic steering apparatus for achieving automatic steering by controlling a steering angle of a steering wheel based on the control target, and a work apparatus which takes charge of the work relating to the magnetic markers.

An installation system has a laser range finder set at a reference position to measure a distance to a target, an installation cart which performs operation for laying a magnetic marker in a road, and an arithmetic unit which identifies a position relation of a laying position where the magnetic marker is laid with respect to the reference position. When operation for laying the magnetic marker in a road is performed, by taking the installation cart during performing the operation of laying the magnetic marker in the road as a target, based on a distance to the installation cart measured by the laser range finder, the position relation of the laying position with respect to the reference position is identified by the arithmetic unit.

A field programmable controller for controlling the components of roadway marking equipment mounted on a vehicle. The controller includes a general-purpose computer and a microcontroller for controlling and monitoring roadway marking equipment and which further maintains the operational state of the roadway marking equipment during reprogramming of the microcontroller. A wireless transceiver in communication with the internet for receiving software update data is also included. Finally, the controller has a configurable state machine responsive to the microcontroller and configured for: defining the start-up operational state of the components; maintaining a predetermined operational state of the components during the time the computer and microcontroller is being reprogrammed with software update data; and maintaining the operational state of the components for normal operation.

A laser is pivotally attached to a line striping machine. The laser projects a planar line outwardly from the line striping machine. The laser freely rotates about a longitudinal axis, under the influence of gravity, relative to the line striping machine, independent of the orientation of the line striping machine, so as to project a vertically planar line regardless of the vertical orientation of the line striping machine. The subject technology compensates for changes in surface contour by providing a rotating laser that projects a vertically compensated projection plane that causes a vertically compensated reference line projected upon the surface.

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 raised pavement marker detector on a paint truck to detect the interruption of line striping for raised pavement markers, including a housing attached by a bracket to a carriage of the truck. The housing includes a rear shaped body having a first plurality of openings extending therethrough. Each of the first plurality of openings contains a retro reflector sensor and each sensor has a housing containing a transmitter and a receiver. A rear cover closes the first plurality of openings through the rear shaped body to protect the sensors. A front body contains a second plurality of openings extending therethrough and mounted to the rear shaped body whereby the second plurality of openings extending through the front body overlaps the first plurality of openings through the rear rectangular shaped body so as to receive a lens portion of each retro reflector sensor within the first plurality of openings.

A holder (1) for fixing a cylindrical spray can (2) is disclosed. The holder (1) comprises a holding unit (3) for fixing the spray can (2) with a first mechanical interface (4) for connecting a GNSS receiver (5) or a prism to the holding unit (3). The holding unit (3) is adapted to hold the spray can (2) such that the GNSS receiver (5) or the prism and the spray can (2) are arranged coaxially with respect to each other. The holding unit (3) comprises a second mechanical interface (6) for releasably connecting the holder (1) to a frame (7) of a surveying cart (8).

A paint-striping guidance system including an outrigger attachable to a paint-striping machine, a light-emitting device carried by the outrigger, and a mounting assembly configured to provide an adjustable connection between the light-emitting device and the outrigger. The light-emitting device is configured to form a planar light region having a vertical orientation. The mounting assembly includes an adjustment mechanism operable to move the light-emitting device relative to the paint-striping machine and thereby change a yaw angle of the planar light region.

A retroreflectivity measurement system comprises a light source arranged to project light across a traffic lane during a measurement run, the light being limited to a particular portion of the visible light spectrum. A camera is selectively sensitive to this light to provide first filtered images and separately selectively sensitive to light at a portion of the spectrum not including the particular portion to provide second filtered images. A controller obtains sequences of first and second filtered images during the measurement run, and identifies within the sequences of images an illuminated road marking; determines a first intensity of the marking from a first filtered image, and a further intensity of the marking from the second filtered images; estimates an ambient intensity of the marking, by applying a scaling factor to the further intensity; and determines a retroreflectivity of the marking as a function of the first and estimated ambient intensities.