An automated rumble strip assembly includes a frame having a top surface configured to support a vehicle tire moving along the frame. The automated rumble strip assembly also includes a plurality of elongate members, each elongate member having a top surface. The automated rumble strip assembly also includes an actuator assembly configured to move the elongate members from a first position where each of the top surfaces of the elongate members is flush with the top surface of the frame, to a second position where each of the top surfaces of the elongate members is recessed relative to the top surface of the frame.

Systems and methods for mitigating traffic are disclosed herein. In some embodiments, a traffic mitigation system includes a plurality of traffic mitigation devices. Each traffic mitigation device can include a base, a cap movably coupled to the base, a motor coupled to move the cap between a flush position and a raised position, a battery coupled to the motor, a power generator coupled to the battery, and an electronics unit housed in the base. The electronics unit comprises a control circuit coupled to control operation of the motor and a communication module operably coupled to the control circuit. The communication modules can receive signals indicating desired operating times from an operator device. The control circuits can then synchronously switch the traffic mitigation devices between the flush and raised positions. The communication modules can also communicate with each other to further synchronize movement of the caps.

Systems and methods for mitigating traffic are disclosed herein. In some embodiments, a traffic mitigation system includes a plurality of traffic mitigation devices. Each traffic mitigation device can include a base, a cap movably coupled to the base, a motor coupled to move the cap between a flush position and a raised position, a battery coupled to the motor, a power generator coupled to the battery, and an electronics unit housed in the base. The electronics unit comprises a control circuit coupled to control operation of the motor and a communication module operably coupled to the control circuit. The communication modules can receive signals indicating desired operating times from an operator device. The control circuits can then synchronously switch the traffic mitigation devices between the flush and raised positions. The communication modules can also communicate with each other to further synchronize movement of the caps.

A retractable speed barrier system includes a winged speed barrier assembly, a lateral pivoting assembly that includes a plurality of trapezoidal hinges, a hollow frame assembly, and an electrically activated linear actuator. The winged speed barrier assembly is attached to the hollow frame assembly by the lateral pivoting assembly. The linear actuator causes the winged speed barrier assembly to laterally pivot on the trapezoidal hinges in a direction perpendicular to the flow of traffic between a retracted positon and a deployed position.

A retractable speed barrier system includes a winged speed barrier assembly, a lateral pivoting assembly that includes a plurality of trapezoidal hinges, a hollow frame assembly, and an electrically activated linear actuator. The winged speed barrier assembly is attached to the hollow frame assembly by the lateral pivoting assembly. The linear actuator causes the winged speed barrier assembly to laterally pivot on the trapezoidal hinges in a direction perpendicular to the flow of traffic between a retracted positon and a deployed position.

A traffic control system and method in which a sensor and processor interact with road modules to illuminate and/or cause to flash in response to predetermined road surface and/or traffic conditions. The system and method can be configured to interact with road signals such as traffic control signals or traffic information signals. The system and method can further be configured to interact with on-board computers of vehicles including autonomous vehicles.

A piston-type variable-speed control device. The piston-type variable-speed control device comprises a plurality of piston-type speed bump structure apparatuses installed on a road surface, a vehicle speed detection device, a speed controller and an electrical power supply. Each of the piston-type speed bump structure apparatuses comprises a ridge platform. A height by which the ridge platform is raised, a time to raise the ridge platform, and a duration for which the ridge platform is raised are controllable to cause a jolting motion to one or more front wheels, one or more rear wheels, or a single wheel of a speeding vehicle. When the speed of a passing vehicle exceeds a predetermined speed limit, the piston-type speed bump structure apparatuses stay at moderately raised position to cause an obvious yet safe jolting motion to the passing vehicle.

A piston-type variable-speed control device. The piston-type variable-speed control device comprises a plurality of piston-type speed bump structure apparatuses installed on a road surface, a vehicle speed detection device, a speed controller and an electrical power supply. Each of the piston-type speed bump structure apparatuses comprises a ridge platform. A height by which the ridge platform is raised, a time to raise the ridge platform, and a duration for which the ridge platform is raised are controllable to cause a jolting motion to one or more front wheels, one or more rear wheels, or a single wheel of a speeding vehicle. When the speed of a passing vehicle exceeds a predetermined speed limit, the piston-type speed bump structure apparatuses stay at moderately raised position to cause an obvious yet safe jolting motion to the passing vehicle.

A surface mount barrier post and assembly method has a retaining system to receive the post. The retaining system includes a post retaining element for receiving the post. The retaining element has a substantially vertical hollow steel section having an opening at its lower end on a first side, a steel foot box aligned with the opening and extending in a first direction, and a bottom plate to which the hollow section and foot box are attached. A steel front traverse member passes over the foot box and lies adjacent the bottom plate perpendicular the first direction. A steel rear traverse member lies adjacent the vertical hollow section on a second side opposite substantially perpendicular to the first direction. U-bolts are arranged to pass over the front and rear members on either side of the retaining element for receipt into holes in a surface on which the retaining system is mounted.

A surface mount barrier post and assembly method has a retaining system to receive the post. The retaining system includes a post retaining element for receiving the post. The retaining element has a substantially vertical hollow steel section having an opening at its lower end on a first side, a steel foot box aligned with the opening and extending in a first direction, and a bottom plate to which the hollow section and foot box are attached. A steel front traverse member passes over the foot box and lies adjacent the bottom plate perpendicular the first direction. A steel rear traverse member lies adjacent the vertical hollow section on a second side opposite substantially perpendicular to the first direction. U-bolts are arranged to pass over the front and rear members on either side of the retaining element for receipt into holes in a surface on which the retaining system is mounted.