An apparatus includes a wireless communication system capable of receiving position information for a plurality of workers in a work zone and a position system capable of providing position information for a piece of movable equipment in the work zone. A processor is capable of receiving the position information for the plurality of workers and the position information for the movable equipment and is capable of determining the position of the workers relative to the position of the movable equipment.

An apparatus includes a wireless communication system capable of receiving position information for a plurality of workers in a work zone and a position system capable of providing position information for a piece of movable equipment in the work zone. A processor is capable of receiving the position information for the plurality of workers and the position information for the movable equipment and is capable of determining the position of the workers relative to the position of the movable equipment.

A self-propelled warning device used for road safety includes a bracket, a warning sign mounted to an upper side of the bracket, and at least one driving mechanism. The driving mechanism includes a supporting leg, a driving unit, and a wheel. The supporting leg includes a receiving portion, the receiving portion defines an accommodating space. The driving unit is accommodated in the accommodating space. The wheel is mounted on the receiving portion and is drivingly connected to the driving unit. The wheel is driven by friction of the driving unit. The driving mechanism is also disclosed.

A self-propelled warning device used for road safety includes a bracket, a warning sign mounted to an upper side of the bracket, and at least one driving mechanism. The driving mechanism includes a supporting leg, a driving unit, and a wheel. The supporting leg includes a receiving portion, the receiving portion defines an accommodating space. The driving unit is accommodated in the accommodating space. The wheel is mounted on the receiving portion and is drivingly connected to the driving unit. The wheel is driven by friction of the driving unit. The driving mechanism is also disclosed.

There is provided an unmanned roadside signage vehicle comprising an autonomous, semiautonomous and/or remotely controllable roadside signage vehicle for various roadside signage, emergency response and maintenance applications. In accordance with one aspect, the unmanned roadside signage vehicle comprises drive motors operably coupled to driven wheels; steering coupled to the driven wheels; a controller for controlling the drive motors and steering; at least one electronic signage board for displaying roadside signage; and a data interface for receiving at least remote control instructions, the data interface operably coupled to the controller and wherein the controller is configured for controlling the drive motors and steering in accordance with the remote control instructions.

There is provided an unmanned roadside signage vehicle comprising an autonomous, semiautonomous and/or remotely controllable roadside signage vehicle for various roadside signage, emergency response and maintenance applications. In accordance with one aspect, the unmanned roadside signage vehicle comprises drive motors operably coupled to driven wheels; steering coupled to the driven wheels; a controller for controlling the drive motors and steering; at least one electronic signage board for displaying roadside signage; and a data interface for receiving at least remote control instructions, the data interface operably coupled to the controller and wherein the controller is configured for controlling the drive motors and steering in accordance with the remote control instructions.

The invention provides a warning sign device. The warning sign device comprises a sign body and a continuous track assembly. The continuous track assembly is disposed on the sign body.

The invention provides a warning sign device. The warning sign device comprises a sign body and a continuous track assembly. The continuous track assembly is disposed on the sign body.

Right and left safety module embodiments are designed to be installed in openings located midway along right and left sides of flatbed trucks. The modules include a standing platform and an intermediate platform. While the truck is being driven alongside a roadway work zone, a worker standing on the module's standing platform either 1) moves traffic delineators one at a time from the intermediate platform, and then places the delineators at spaced locations alongside the roadway work zone, or 2) removes traffic delineators one at a time from spaced locations alongside the roadway work zone, and then places the delineators onto the intermediate platform. Vertically movable safety rails and pivotal safety gates of the modules prevent falls from the modules of workers standing on the standing platform.

Right and left safety module embodiments are designed to be installed in openings located midway along right and left sides of flatbed trucks. The modules include a standing platform and an intermediate platform. While the truck is being driven alongside a roadway work zone, a worker standing on the module's standing platform either 1) moves traffic delineators one at a time from the intermediate platform, and then places the delineators at spaced locations alongside the roadway work zone, or 2) removes traffic delineators one at a time from spaced locations alongside the roadway work zone, and then places the delineators onto the intermediate platform. Vertically movable safety rails and pivotal safety gates of the modules prevent falls from the modules of workers standing on the standing platform.