A road stud includes a base having a drainage path and a portion that generates sound when pressed. A fixing portion is screwed into the base, and a dome shaped cap is fixed onto the base. The sound generating portion passes through a path in a light reflective portion, which is fixed onto a height surface of the base.

A driving assistance system and method is provided that includes a plurality of magnetic markers having a magnet component configured to generate a magnetic field on a road surface, together with a pavement marking material that includes a RFID tag that is readable by a RFID tag reader. The pavement marking material includes encoded information that is conveyed to a vehicle's on-board sensing system that is adapted to obtain data through wireless communications. The magnetic markers are conformable, polymeric materials having viscoelastic properties such that vehicles having magnetic sensors can detect magnetic fields from the magnetic markers when positioned on a road surface.

An apparatus includes a pavement marker configured to be mounted to a road at a lane line of a lane at known orientation with respect to the lane line; and an RF device carried by the raised pavement marker. The RF device is configured to transmit a directional RF navigation signal and it is positioned relative to the known orientation to transmit the signal across the lane in a direction that is substantially normal to the lane line.

A driving assistance system and method is provided that includes a plurality of magnetic markers having a magnet component configured to generate a magnetic field on a road surface, together with a pavement marking material that includes a RFID tag that is readable by a RFID tag reader. The pavement marking material includes encoded information that is conveyed to a vehicle's on-board sensing system that is adapted to obtain data through wireless communications. The magnetic markers are conformable, polymeric materials having viscoelastic properties such that vehicles having magnetic sensors can detect magnetic fields from the magnetic markers when positioned on a road surface.