An anti-collision warning system for intersections includes a vehicle sensor adapted to detect an approaching vehicle; two or more warning strips, which contain signal-activated warning lights and function as gentle, but effective, speed bumps to approaching vehicles; and a controller coupled to the sensor and to the warning strips. The system is internally and/or externally powered and can be installed in a warehouse, factory, or other venue having an intersection where a vehicle path meets a pedestrian path, or where two vehicle paths meet. An improved warning strip/speed bump, adapted for use in the anti-collision warning system, includes an elongate member, preferably trapezoidal in cross-section, with an elevated upper face or top, opposed first and second ramp faces that converge toward the upper face, and a bottom face; a pair of longitudinal channel in the bottom of the member; and a plurality of LEDs secured within the channels.

A retractable speed bump and a method for retracting a speed bump. The retractable speed bump may include a retractile element, a chassis, and a hydraulic mechanism. The hydraulic mechanism may include a hydraulic cylinder including a hollow cylindrical shape, a hydraulic piston including a solid cylindrical shape, a first connecting rod, an oil sealing member, a return spring, a spring retainer, and a floating gasket. Responsive to downward movement of the first connecting rod at a speed higher than a threshold, the hydraulic cylinder may prevent downward movement of the first connecting rod and responsive to downward movement of the first connecting rod at a speed lower than the threshold, the hydraulic cylinder may allow downward movement of the first connecting rod.

A retractable speed bump and a method for retracting a speed bump. The retractable speed bump may include a retractile element, a chassis, and a hydraulic mechanism. The hydraulic mechanism may include a hydraulic cylinder including a hollow cylindrical shape, a hydraulic piston including a solid cylindrical shape, a first connecting rod, an oil sealing member, a return spring, a spring retainer, and a floating gasket. Responsive to downward movement of the first connecting rod at a speed higher than a threshold, the hydraulic cylinder may prevent downward movement of the first connecting rod and responsive to downward movement of the first connecting rod at a speed lower than the threshold, the hydraulic cylinder may allow downward movement of the first connecting rod.

A monitor detects a speed of a vehicle for controlling a speed regulator. A speed regulator controller configures a speed regulator based on the detected speed, the speed regulator being configurable to inflate to an extended configuration and deflate to a retracted configuration, the speed regulator controller configured to inflate the speed regulator to the extended configuration in a first mode and to deflate the speed regulator to the retracted configuration in the first mode based on the detected speed.

A monitor detects a speed of a vehicle for controlling a speed regulator. A speed regulator controller configures a speed regulator based on the detected speed, the speed regulator being configurable to inflate to an extended configuration and deflate to a retracted configuration, the speed regulator controller configured to inflate the speed regulator to the extended configuration in a first mode and to deflate the speed regulator to the retracted configuration in the first mode based on the detected speed.

In some embodiments, a directional surface marking may provide directional messaging to users based on their direction of travel on a base surface, such as a roadway, walkway, or interior flooring, as non-limiting examples. In some aspects, the directional messaging may comprise different colors, text, or symbols, wherein a user may view different directional messaging on a directional surface marking dependent on direction of travel. In some embodiments, directional surface markings may comprise a profile layer, wherein the profile layer may comprise a plurality of profiles, which may allow for an application of directional messaging.

In some embodiments, a directional surface marking may provide directional messaging to users based on their direction of travel on a base surface, such as a roadway, walkway, or interior flooring, as non-limiting examples. In some aspects, the directional messaging may comprise different colors, text, or symbols, wherein a user may view different directional messaging on a directional surface marking dependent on direction of travel. In some embodiments, directional surface markings may comprise a profile layer, wherein the profile layer may comprise a plurality of profiles, which may allow for an application of directional messaging.

A vehicle arrestor system includes a ditch box defined by a pair of opposing side walls and a bottom wall extending between the side walls forming a chamber therebetween. A movable plate forms at least a portion of a top wall of the chamber. A mechanical actuator is operably coupled to the movable plate for causing the movable plate to move between a non-actuated position and an actuated position. The movable plate is flush with the road pavement when in the non-actuated position and is not flush with the road pavement when in the actuated position. The vehicle arrestor system serves a dual purpose of arresting movement of a vehicle and providing a notification to a driver of the vehicle to slow down if the vehicle is exceeding the posted speed limit. A method of controlling a vehicle in a locked island arrangement is also disclosed.

A rumble strip forming machine is provided which includes a transport, a lift device, a grinder, and a drive means that connect drive portions of the transport to the grinder to synchronize engagement of a cutting device with the pavement with forward movement of the transport. The grinder is configured to provide both rotation of a pavement cutter and up and down movement of the pavement cutter while portions of the grinder remain in contact with the pavement.

A rumble strip forming machine is provided which includes a transport, a lift device, a grinder, and a drive means that connect drive portions of the transport to the grinder to synchronize engagement of a cutting device with the pavement with forward movement of the transport. The grinder is configured to provide both rotation of a pavement cutter and up and down movement of the pavement cutter while portions of the grinder remain in contact with the pavement.