In one embodiment, a safety trailer has semi-tractor hitches at both ends and a safety wall that is fixed to one side of the trailer. That side, however, can be changed to the right or left side of the road, depending on the end to which the truck attaches. A caboose can be attached at the end of the trailer opposite the tractor to provide additional lighting and impact protection. Optionally, the trailer can be equipped with overhead protection, lighting, ventilation, onboard hydraulics, compressors, generators and other equipment, as well as related fuel, water, storage and restroom facilities and other amenities.

Disclosed herein is a bollard system including an impact receiving post and a foundation cage. The impact receiving post includes an outer surface, a proximal end, and a distal end. The foundation cage defines a three-dimensional lattice structure. The foundation cage is coupled to the proximal end of the impact receiving post and is configured for installation in concrete beneath a ground surface. The foundation cage defines a recess to receive a proximal portion of the impact receiving post. The foundation cage includes a horizontal stop member at least partially extending across the recess and supporting the impact receiving post and preventing the impact receiving post from extending further into the foundation cage before the concrete sets.

Methods, systems, and apparatus for controlling a speed regulator are described. A monitor detects a speed of a vehicle. A speed regulator controller retracts the speed regulator from an extended configuration to a retracted configuration based on the detected speed in response to the vehicle traveling at a speed less than a defined speed, the speed regulator being configurable to extend and retract.

Methods, systems, and apparatus for controlling a speed regulator are described. A monitor detects a speed of a vehicle. A speed regulator controller retracts the speed regulator from an extended configuration to a retracted configuration based on the detected speed in response to the vehicle traveling at a speed less than a defined speed, the speed regulator being configurable to extend and retract.

A gate assembly having a cable extending across a panel, the panel movable between a closed position blocking an entry port and an open position; a latch post secured in the ground on a first side of the entry port, wherein a first end of the cable is connected to the latch post when the panel is in the closed position; and a post device secured in the ground on a second side of the entry port, the panel positioned through a passage of the post device.

A roadside barrier which has underlying concrete support blocks, a mesh fence, optionally including overlying transparent sheet material, which is erected on the blocks, and a deterrent, sloping mesh-material, surface, which hinders human access, at a base of the fence on the support blocks.

In one embodiment, a safety trailer has semi-tractor hitches at both ends and a safety wall that is fixed to one side of the trailer. That side, however, can be changed to the right or left side of the road, depending on the end to which the truck attaches. A caboose can be attached at the end of the trailer opposite the tractor to provide additional lighting and impact protection. Optionally, the trailer can be equipped with overhead protection, lighting, ventilation, onboard hydraulics, compressors, generators and other equipment, as well as related fuel, water, storage and restroom facilities and other amenities.

In one embodiment, a safety trailer has semi-tractor hitches at both ends and a safety wall that is fixed to one side of the trailer. That side, however, can be changed to the right or left side of the road, depending on the end to which the truck attaches. A caboose can be attached at the end of the trailer opposite the tractor to provide additional lighting and impact protection. Optionally, the trailer can be equipped with overhead protection, lighting, ventilation, onboard hydraulics, compressors, generators and other equipment, as well as related fuel, water, storage and restroom facilities and other amenities.

A bollard system may include a bollard, a carrier device having a recess adapted to carry the bollard in a stowed configuration, and a pivot rod fixedly secured to the bollard and received by a pivot carrier of the carrier device. The bollard may be adapted to rotate about a longitudinal axis of the pivot rod between a deployed configuration and the stowed configuration. The bollard system may also include a lock plate adapted to be received by the carrier device to maintain the bollard in the deployed configuration. The bollard system may further include a cover plate carried by the carrier device and adapted to cover at least a portion of the recess of the carrier device in both the stowed configuration and the deployed configuration.

A barrier system includes a handrail, and a connector to couple the handrail to a post extension that extends upward from a floor. The handrail has and end with a width measured in a direction transverse to an elongate length of the handrail. The connector includes a socket to hold the end of the handrail. The socket is defined by an elongate channel that extends in a direction substantially parallel to the post extension when the connector is attached to the post extension. The channel has a length that is greater than the width of the end of the handrail.