This invention is a novel retroreflective traffic stripe comprising a widely spaced repeating pattern of linear light turning prisms over cube corner retroreflective prisms in a critical optimal configuration. The light turning prisms comprise at least two exposed surfaces, one approximately vertical facing the headlights of oncoming traffic, and another opposing the first and sloped by approximately 45 degrees. The approximately vertical surface efficiently accepts light from the headlights and transmits such light to the sloped surface which totally internally reflects such light downward onto an array of cube corner retroreflective prisms, which totally internally reflect such light in approximately the reverse direction. Such reflected light once more encounters the sloped face of the light turning prisms which totally internally reflects the light toward the approximately vertical surface, where such light exits and returns toward the headlights and, more importantly, toward the eyes of the driver of the vehicle.

This invention is a novel retroreflective traffic stripe comprising a widely spaced repeating pattern of linear light turning prisms over cube corner retroreflective prisms in a critical optimal configuration. The light turning prisms comprise at least two exposed surfaces, one approximately vertical facing the headlights of oncoming traffic, and another opposing the first and sloped by approximately 45 degrees. The approximately vertical surface efficiently accepts light from the headlights and transmits such light to the sloped surface which totally internally reflects such light downward onto an array of cube corner retroreflective prisms, which totally internally reflect such light in approximately the reverse direction. Such reflected light once more encounters the sloped face of the light turning prisms which totally internally reflects the light toward the approximately vertical surface, where such light exits and returns toward the headlights and, more importantly, toward the eyes of the driver of the vehicle.

The invention pertains to pavement marking patterns and the application thereof to roads, streets, walkways and the like. Various pattern marking designs replicate bricks, cobblestones, horizontal signage, logos and other components. The marking patterns are composed of two or more independent sections, the first section is a grid representing for example, the mortar joints in a brick wall. The second sections or inserts, for example represent bricks which are contained within the grid. As the first and second sections are generally formed from different colored, preferably thermoplastic materials, a hot melt adhesive spray is utilized on the bottom surface of the marking pattern bridging the intersections between the first and second sections, maintaining the integrity of the marking pattern for convenience during handling and application to a substrate. Preferably the hot melt spray adhesive has approximately the same softening point range as the pattern sections for heat treatment during application.

The invention pertains to pavement marking patterns and the application thereof to roads, streets, walkways and the like. Various pattern marking designs replicate bricks, cobblestones, horizontal signage, logos and other components. The marking patterns are composed of two or more independent sections, the first section is a grid representing for example, the mortar joints in a brick wall. The second sections or inserts, for example represent bricks which are contained within the grid. As the first and second sections are generally formed from different colored, preferably thermoplastic materials, a hot melt adhesive spray is utilized on the bottom surface of the marking pattern bridging the intersections between the first and second sections, maintaining the integrity of the marking pattern for convenience during handling and application to a substrate. Preferably the hot melt spray adhesive has approximately the same softening point range as the pattern sections for heat treatment during application.

A pavement marking composition comprises an isocyanate-containing component and an amine-containing component. At least one of the components comprises plasticizer and at least one of the components comprises filler. The composition comprises about 5 wt. % or more plasticizer and is substantially free of polyaspartic ester amines.

A pavement marking composition comprises an isocyanate-containing component and an amine-containing component. At least one of the components comprises plasticizer and at least one of the components comprises filler. The composition comprises about 5 wt. % or more plasticizer and is substantially free of polyaspartic ester amines.

A pavement marker is disclosed that includes a base member, two opposite resilient members and an upright member, wherein the upright member has an ends that extend laterally from a central section and are received into the opposite resilient members. The base member is substantially planar with side rails and extends under the upright member and is adapted to receive and retain the resilient members. The resilient members hold the upright member in an upright position and allow for rotation of said upright member in response to a force applied to the upright member, and a central section of the upright member includes a reflective surface.

Installation cart for laying a magnetic marker in a road to achieve driving assist control on a vehicle side has boring drill at each of front and rear of vehicle body, the boring drill boring accommodation hole as a laying position for the magnetic marker in road surface, is capable of boring accommodation holes at two locations with a predetermined space without moving in a state of being parked at any position, and is capable of performing efficient laying operation without requiring, for example, positioning of installation cart for enhancing accuracy of a space between these accommodation holes at two locations forming the laying positions.

Installation cart for laying a magnetic marker in a road to achieve driving assist control on a vehicle side has boring drill at each of front and rear of vehicle body, the boring drill boring accommodation hole as a laying position for the magnetic marker in road surface, is capable of boring accommodation holes at two locations with a predetermined space without moving in a state of being parked at any position, and is capable of performing efficient laying operation without requiring, for example, positioning of installation cart for enhancing accuracy of a space between these accommodation holes at two locations forming the laying positions.

A preformed thermoplastic roadway line marking includes a preformed thermoplastic substrate layer capable of being attached to a roadway, and a preformed thermoplastic upper layer in contact with the substrate layer. Advantageously, such an upper layer includes a surface area having a plurality of spaced-apart slits. The slits penetrate through an entire cross-sectional thickness of the upper layer and are in fluid communication with the substrate layer. When heated to a liquid state, the substrate layer has a morphed shape and is at least partially displaced upwardly through the slits and disposed on the upper layer such that the upper layer is fixedly locked to the substrate layer and maintained at a substantially stable position relative to the substrate layer. Such a structural configuration provides an unexpected and unpredictable result of insuring the marking is locked into place relative to the roadway, thereby reducing labor costs and improving durability.