The invention discloses an automatic command device for imitation traffic police, which includes a fuselage, a first support rod is fixedly installed on the upper side of the stop card base, a stop card is fixedly installed on the right side of the first support rod, and a screw thread rotates to drive a thread. The push plate moves to the right, the threaded push plate moves to the right to squeeze out the water in the water storage tank through the water spray valve, control the command of the stop sign through the rack and pinion, and control the passing sign through the linkage mechanism. Command, design the screw and other transmissions, after pumping the water under the ground into the water storage tank, while showing the stop sign, the push plate squeezes the water out of the water storage tank and sprays on the ground to remind pedestrians and Vehicles should not do illegal acts, which will not hurt pedestrians or provide a warning effect.

The present disclosure provides a method and a device for acquiring dynamic map data, and a storage medium. The method includes: acquiring, by a road operation device having a network access capacity, dynamic map data of a road work site where the road operation device is located; and providing, by the road operation device having the network access capacity, the dynamic map data to a map service system through a dynamic map data acquisition system, such that the map service system reflects content of the dynamic map data in a predetermined product form.

An all welded signal light assembly transportable in secure, stacked condition with a plurality of all welded signal light assemblies of like construction.

An all welded signal light assembly transportable in secure, stacked condition with a plurality of all welded signal light assemblies of like construction.

An all welded signal light assembly transportable in secure, stacked condition with a plurality of all welded signal light assemblies of like construction.

An all welded signal light assembly transportable in secure, stacked condition with a plurality of all welded signal light assemblies of like construction.

The present invention relates to a collision prevention apparatus and system for a parking lot and, more specifically, to an apparatus and system which, when a part of a car is detected within a safety distance, indicates the distance to a parking lot wall or outputs a warning so as to prevent a driver of the car from running the car into the parking lot wall. According to the present invention, the collision prevention apparatus and system for a parking lot is installed on the wall surface of a curved ramp for entering and exiting a parking lot, a pillar in the parking lot, or the like so as to prevent a car from being damaged by a collision with the wall surface of the curved ramp and the edge of the pillar due to inexperienced driving or carelessness, and assist a driver to prevent an accident and properly park his/her car by allowing the driver to accurately recognize the traveling direction of the car and the distance to the wall.

The present invention relates to a collision prevention apparatus and system for a parking lot and, more specifically, to an apparatus and system which, when a part of a car is detected within a safety distance, indicates the distance to a parking lot wall or outputs a warning so as to prevent a driver of the car from running the car into the parking lot wall. According to the present invention, the collision prevention apparatus and system for a parking lot is installed on the wall surface of a curved ramp for entering and exiting a parking lot, a pillar in the parking lot, or the like so as to prevent a car from being damaged by a collision with the wall surface of the curved ramp and the edge of the pillar due to inexperienced driving or carelessness, and assist a driver to prevent an accident and properly park his/her car by allowing the driver to accurately recognize the traveling direction of the car and the distance to the wall.

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.