In current highway transportation systems pavement markings guide vehicles along roads. A new system using metallic objects and electromagnetic sensing equipment would enable vehicles to better navigate roads. Metallic objects are placed on roadway surfaces in a similar fashion of existing pavement markings. The metallic objects are patterned to develop a code of information that is detectable using electromagnetic fields. When these fields are detected, the vehicles can be fully or semi-autonomously guided using the information communicated by the metallic filings.

In current highway transportation systems pavement markings guide vehicles along roads. A new system using metallic objects and electromagnetic sensing equipment would enable vehicles to better navigate roads. Metallic objects are placed on roadway surfaces in a similar fashion of existing pavement markings. The metallic objects are patterned to develop a code of information that is detectable using electromagnetic fields. When these fields are detected, the vehicles can be fully or semi-autonomously guided using the information communicated by the metallic filings.

In one preferred form of the present invention, there is provided a road-based traffic sensor comprising: a body having a base and an upper portion; the body housing electronic components including a magnetometer and a battery; the magnetometer for monitoring changes in magnetic field; the body having a slim line configuration and being able to support heavy vehicles travelling at speed; the slim line configuration of the body having a height no more than 25 mm and housing the electronic components; the base for being adhesively secured to the upper surface of the road with negligible damage to the upper surface.

In one preferred form of the present invention, there is provided a road-based traffic sensor comprising: a body having a base and an upper portion; the body housing electronic components including a magnetometer and a battery; the magnetometer for monitoring changes in magnetic field; the body having a slim line configuration and being able to support heavy vehicles travelling at speed; the slim line configuration of the body having a height no more than 25 mm and housing the electronic components; the base for being adhesively secured to the upper surface of the road with negligible damage to the upper surface.

A composition comprises a thermoplastic binder, at least one optical component, and a colour correcting component. The optical component comprises retroreflecting particles. The color correcting component comprising at least one pigment and is selected to selectively absorb a wavelength of light. The thermoplastic binder and at least one optical component has a first colour and the colour correcting component has a second colour. The first colour and second colour are a complementary colour pair.

The present disclosure describes a preformed or in some cases a hot applied thermoplastic marking composition comprising a planar top surface portion and a planar bottom surface portion that are coplanar to each other, wherein said bottom surface portion is directly applied to a substrate via application of heat or pressure or both heat and pressure and wherein said top surface portion comprises an intermix that exits throughout said thermoplastic composition and includes large grit size aggregate in the range of about 8 to about 20 mesh or grit size, thereby reducing or eliminating tire tracking while also improving long-term skid resistance.

The present disclosure describes a preformed or in some cases a hot applied thermoplastic marking composition comprising a planar top surface portion and a planar bottom surface portion that are coplanar to each other, wherein said bottom surface portion is directly applied to a substrate via application of heat or pressure or both heat and pressure and wherein said top surface portion comprises an intermix that exits throughout said thermoplastic composition and includes large grit size aggregate in the range of about 8 to about 20 mesh or grit size, thereby reducing or eliminating tire tracking while also improving long-term skid resistance.

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.

In various embodiments, the present disclosure provides for reflective materials, articles and methods incorporating a mesh arrangement of multiple, discrete retroreflective canted cube corner reflectors each having generally flat incident surfaces and high transparency, with a geometry and a refractive index ratio sufficiently high enough to produce a high degree of total internal reflection (TIR) that results in anisotropic retroreflectivity.