A pavement marker dispenser for a pavement marking system dispenses retroreflective markers for a roadway with more accurate marker spacing. The dispenser includes an elongated feed tube that houses a generally vertical curvilinear stack of pavement markers. The feed tube has top and bottom openings to respectively receive and dispense the markers in a downwardly vertical direction. The feed tube has a nonlinear curvature along its length to produce the curvilinear stack of markers so that a downwardly vertical stacking force imposed on a bottommost marker to be dispensed is reduced. The feed tube has first and second curved portions so that the nonlinear curvature is generally serpentine in shape. A disc actuator having a pushing arm extends perpendicular to the feed tube to push the bottommost marker in a rearward and downward direction into the delivery chute, which dispenses the markers.

A pavement marker dispenser for a pavement marking system dispenses retroreflective markers for a roadway with more accurate marker spacing. The dispenser includes an elongated feed tube that houses a generally vertical curvilinear stack of pavement markers. The feed tube has top and bottom openings to respectively receive and dispense the markers in a downwardly vertical direction. The feed tube has a nonlinear curvature along its length to produce the curvilinear stack of markers so that a downwardly vertical stacking force imposed on a bottommost marker to be dispensed is reduced. The feed tube has first and second curved portions so that the nonlinear curvature is generally serpentine in shape. A disc actuator having a pushing arm extends perpendicular to the feed tube to push the bottommost marker in a rearward and downward direction into the delivery chute, which dispenses the markers.

Systems and method for applying roadway marking materials into a groove(s) in a roadway surface and/or forming a recessed groove(s) in a roadway surface. The systems and methods incorporate a contour sensor that provides real-time information of the marking material and/or groove. Based on the contour information, a marking material applicator can be aligned with a recessed groove in a roadway surface to ensure the marking material is applied within the confines of the groove. Alternatively, such contour information may be acquired during groove formation to ensure depth, tilt and/or bottom surface smoothness of the groove is within predetermined limits.

A detectable warning tile system has a tile base with an upper surface and a lower surface. The upper surface has a plurality of upward projections therefrom. The tile base has two side edges for alignment with corresponding side edges of other tiles, and front and rear edges. An area of the upper surface of the tile base is formed free of the detectable warnings and may include a trough into or over which a replaceable tile section may be placed. The tile base and/or replaceable tile section may be configured to receive one or more individually-installable detectable warnings.

A detectable warning tile system has a tile base with an upper surface and a lower surface. The upper surface has a plurality of upward projections therefrom. The tile base has two side edges for alignment with corresponding side edges of other tiles, and front and rear edges. An area of the upper surface of the tile base is formed free of the detectable warnings and may include a trough into or over which a replaceable tile section may be placed. The tile base and/or replaceable tile section may be configured to receive one or more individually-installable detectable warnings.

Disclosed are PP/PE copolymer backbone based pre-manufactured thermoplastic airport signage compositions primarily applied in relatively large sections onto airport runways, taxiways, and additional paved surfaces. The composition provides alkali resistant formulations comprising at least 6 weight percent PE/PP, 20 weight percent binder resin with between 5 and 15 weight percent of a tackifier resin, between 2 and 12 weight percent titanium dioxide with an optional organic dye, wherein the intermix is at least 30 weight percent of the composition and wherein the intermix is an inorganic filler that greatly reduce or eliminate debris resistance when compared to other polymer backbone compositions.

Disclosed are PP/PE copolymer backbone based pre-manufactured thermoplastic airport signage compositions primarily applied in relatively large sections onto airport runways, taxiways, and additional paved surfaces. The composition provides alkali resistant formulations comprising at least 6 weight percent PE/PP, 20 weight percent binder resin with between 5 and 15 weight percent of a tackifier resin, between 2 and 12 weight percent titanium dioxide with an optional organic dye, wherein the intermix is at least 30 weight percent of the composition and wherein the intermix is an inorganic filler that greatly reduce or eliminate debris resistance when compared to other polymer backbone compositions.

The present application generally relates to a thermoplastic road marker having improved crack-resistance, to compositions of such road markers, and to methods of making and applying these road markers. Some embodiments of the present disclosure relate to a thermoplastic road marking composition, comprising: ethylene vinyl acetate (EVA) and/or ethylene acrylic acid (EAA) copolymers in an amount of between about 1.5 wt % to about 6.0 wt %; and core-shell particles in an amount of between about 0.5 wt % and about 3.0 wt %. In at least some embodiments, the EVA and/or EAA have a melt flow index equal to or less than 45 g/10 min at 190 C.

The present application generally relates to a thermoplastic road marker having improved crack-resistance, to compositions of such road markers, and to methods of making and applying these road markers. Some embodiments of the present disclosure relate to a thermoplastic road marking composition, comprising: ethylene vinyl acetate (EVA) and/or ethylene acrylic acid (EAA) copolymers in an amount of between about 1.5 wt % to about 6.0 wt %; and core-shell particles in an amount of between about 0.5 wt % and about 3.0 wt %. In at least some embodiments, the EVA and/or EAA have a melt flow index equal to or less than 45 g/10 min at 190 C.

The present invention relates to a smart road marking construction method, a smart road marking, and an autonomous driving system using the same. To this end, the smart road marking construction method according to an embodiment of the present invention comprises: a step (S10) of preparing a road marking composition by mixing a paint and a hardener; a step (S20) of forming a base layer 10 by applying the road marking composition to an upper surface of a road 1; a step (S30) of forming a bead layer 20 by applying glass beads 21 containing magnetic materials (M) to an upper surface of the base layer 10; and a step (S40) of allowing the resulting bead layer to be cured for a certain period of time. As a result, the lane recognition rate of autonomous vehicles by means of radar sensors can be improved, thereby addressing the limitations of conventional vision-based road markings.