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.

A road marker and related light based warning device are described. The road marker or device includes a thermal sensor that triggers the illumination of at least one light-emitting diode at a predetermined temperature. The temperature may be associated with ice formation. The light-emitting diode(s) may flash to alert motorists to hazardous road conditions. The road marker or device utilize simple components to increase reliability, particularly when the device is subjected to high heat such as when the device is mounted into hot tar seal. The device further includes a switching element that prevents rapid on/off cycling.

A road marker and related light based warning device are described. The road marker or device includes a thermal sensor that triggers the illumination of at least one light-emitting diode at a predetermined temperature. The temperature may be associated with ice formation. The light-emitting diode(s) may flash to alert motorists to hazardous road conditions. The road marker or device utilize simple components to increase reliability, particularly when the device is subjected to high heat such as when the device is mounted into hot tar seal. The device further includes a switching element that prevents rapid on/off cycling.

Technologies for communicating roadway information includes a plurality of roadway markers configured to propagate communications amongst each other. To do so, each roadway marker is configured to transmit communications to one or more other roadway markers. The communications may include sensor data generated by a sensor of a roadway marker. One or more roadway markers may transmit the sensor data to a roadway controller. Additionally or alternatively, the communication may include an alert message. A roadway marker may include a local alert device and be configured to activate the alert device in response to receiving an alert message. Additionally, one or more roadway markers may communicate with a roadway controller, a roadway traffic device, and/or an in-vehicle computing system of a vehicle to propagate roadway marker sensor data and/or alert messages. The roadway controller may be configured to control the roadway traffic devices, roadway makers, and/or communicate with remote computing devices.

Technologies for communicating roadway information includes a plurality of roadway markers configured to propagate communications amongst each other. To do so, each roadway marker is configured to transmit communications to one or more other roadway markers. The communications may include sensor data generated by a sensor of a roadway marker. One or more roadway markers may transmit the sensor data to a roadway controller. Additionally or alternatively, the communication may include an alert message. A roadway marker may include a local alert device and be configured to activate the alert device in response to receiving an alert message. Additionally, one or more roadway markers may communicate with a roadway controller, a roadway traffic device, and/or an in-vehicle computing system of a vehicle to propagate roadway marker sensor data and/or alert messages. The roadway controller may be configured to control the roadway traffic devices, roadway makers, and/or communicate with remote computing devices.

A double walled earth grabbing water permeable modular paver having a first group of outer cells, a second group of outer cells, a third group of outer cells, a fourth outer cell, a fifth outer cell, and a plurality of inner cells. Each of the plurality of outer cells and inner cells further include an outer wall; an inner wall; a top surface; a plurality of structural support ribs; a permeable bottom portion engaging each inner wall; and a plurality gripping members extending from the permeable bottom portion.

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 pavement marker includes a plastic base having an exposed upper surface, a reflector supported by the plastic base, and a metal rub rail coupled to the plastic base. The rub rail has an exposed rub surface positioned above the exposed upper surface of the plastic base. Methods of making and installing a pavement marker are also provided.

According to the present invention, there is an improved road reflector comprised by a support base (6), a top casing (1) and reflecting crystals (5), wherein said support base (6) is coupled with the top casing (1) through a plurality of fastening flanges (12) and through a plurality of vertical reinforcements (7) interlayed therebetween and at least two fastening channels (8) with angular walls (8a) that provide an adhesive and mechanical reinforcement.