A work system (1) including a work vehicle (11) which, as moving on a road (1R) where magnetic markers (10) are laid, detects the magnetic marker (10) to conduct work of preparation, maintenance, or management of the road (1R) has a control unit (13) which identifies a relative position of the work vehicle (11) with respect to the magnetic marker (10) and identifies a point to be worked on by the work vehicle (11) based on the relative position. With the work vehicle (11) conducting work at the point identified by the control unit (13), work regarding the traveling road where the magnetic markers are laid can be efficiently conducted.

A work system (1) including a work vehicle (11) which, as moving on a road (1R) where magnetic markers (10) are laid, detects the magnetic marker (10) to conduct work of preparation, maintenance, or management of the road (1R) has a control unit (13) which identifies a relative position of the work vehicle (11) with respect to the magnetic marker (10) and identifies a point to be worked on by the work vehicle (11) based on the relative position. With the work vehicle (11) conducting work at the point identified by the control unit (13), work regarding the traveling road where the magnetic markers are laid can be efficiently conducted.

An installation system has a laser range finder set at a reference position to measure a distance to a target, an installation cart which performs operation for laying a magnetic marker in a road, and an arithmetic unit which identifies a position relation of a laying position where the magnetic marker is laid with respect to the reference position. When operation for laying the magnetic marker in a road is performed, by taking the installation cart during performing the operation of laying the magnetic marker in the road as a target, based on a distance to the installation cart measured by the laser range finder, the position relation of the laying position with respect to the reference position is identified by the arithmetic unit.

An installation system has a laser range finder set at a reference position to measure a distance to a target, an installation cart which performs operation for laying a magnetic marker in a road, and an arithmetic unit which identifies a position relation of a laying position where the magnetic marker is laid with respect to the reference position. When operation for laying the magnetic marker in a road is performed, by taking the installation cart during performing the operation of laying the magnetic marker in the road as a target, based on a distance to the installation cart measured by the laser range finder, the position relation of the laying position with respect to the reference position is identified by the arithmetic unit.

The invention is directed to a photovoltaic roadway assembly, to a method of assembling the photovoltaic roadway assembly, and to a method of replacing one or more photovoltaic modules in the photovoltaic roadway assembly.

The invention is directed to a photovoltaic roadway assembly, to a method of assembling the photovoltaic roadway assembly, and to a method of replacing one or more photovoltaic modules in the photovoltaic roadway assembly.

A detector access chamber (10) for a wireless directional detector (40), comprises a hollow body (12) having an open a upper end (20) and a lower end (24) at an opposing end, a lid (16) engageable with the open upper end (20) of the body (12) and preferably adapted to accommodate at least a 40 tonne vehicular load, and a detector holder (38) within the body (12) to hold a wireless directional detector (40). In use, the lid (16) and the detector holder (38) together define a volume adapted to constrain internal reorientation of the wireless directional detector (40) caused by vibrations. A submergible detector system (42) is also provided.

A detector access chamber (10) for a wireless directional detector (40), comprises a hollow body (12) having an open a upper end (20) and a lower end (24) at an opposing end, a lid (16) engageable with the open upper end (20) of the body (12) and preferably adapted to accommodate at least a 40 tonne vehicular load, and a detector holder (38) within the body (12) to hold a wireless directional detector (40). In use, the lid (16) and the detector holder (38) together define a volume adapted to constrain internal reorientation of the wireless directional detector (40) caused by vibrations. A submergible detector system (42) is also provided.

A speed bump and a speed bump transportation system are provided. The speed bump comprises: a base; a cover disposed opposite to the base and configured to be movable relative to the base; an electric-power generation device associated with the cover to scavenge energy through the cover and convert the energy into electrical energy; a first detection device for detecting a force condition of the cover and sending a first detection signal to a communication device when the cover is pressed; the communication device electrically connected to the first detection device and for sending a first communication signal when receiving the first detection signal, wherein the electric-power generation device is electrically connected to the communication device and the first detection device respectively to supply electric-power to the communication device and the first detection device.

Road signal systems and methods for controlling road signals include a piezoelectric layer integrated with a surface that undergoes stresses with traffic passing over the surface. A power collection circuit is configured to collect and store power from the piezoelectric layer. One or more devices receive electrical power from the power collection circuit responsive to traffic passing over the surface.