Glossary of technology and equipment for "road safety facilities"

This facility is installed to improve the visibility, drivability, and safety of Expressway users.

Guard fence Burrow

This is a fence-like facility that is installed along the roadway to prevent vehicles that are traveling in the wrong direction from deviating to the outside, oncoming lanes, or sidewalks.
It also has the purpose of guiding the driver's line of sight and suppressing pedestrians from crossing too much.
Guard rails, guard cables, box beams, etc. are available as protective fence types. In addition, there is a rigid guard fence that does not deform and is aimed at preventing the vehicle from departing from the road.

Guardrail

It is a protective fence for a structure in which a beam with a corrugated cross-section that is mainly connected is supported by columns. The most common type of guard fence.

Guard cable

It is a protective fence with a structure in which tensioned ropes (wire cables) are supported by columns.
It cannot be used in a curved part with a small curve radius because the column tilts due to tension.

Box beam

A type of guard fence that uses one large box-shaped steel as a beam, and is suitable for use in narrow separators.

Wall balustrade Kave Koran

It is a bridge guard fence to prevent cars from jumping out of the road. Initially, steel guardrails were used, but since they were not easily damaged even if a car collided and they were easy to manage, they became the name because they replaced the concrete wall structure. is. Precast products may be used, but the official name is reinforced concrete wall guard fence. Recently, a Florida type with a slope in front has been used due to the guidance effect at the time of vehicle collision.

Gen Light prevention facility Koboshi Shisetsu

It is installed on the guard rail of the median strip. This facility prevents the light from the headlights of oncoming vehicles to ensure traffic safety and smoothness at night.
Types include light-shielding nets, light-shielding plates, expanded metal, and mid-planting.

Sha Light board Police box

It is installed on the guard rail of the median strip. This is a plate that is installed for the purpose of blocking light from oncoming vehicles, and may be rectangular or military.

Sha light like this Net

It is installed on the guard rail of the median strip. It is a net that is installed for the purpose of blocking light from oncoming vehicles.

Mid-planting Abundant

We planted between the guardrails of the median strip (middle) and planted trees (such as squirrels and azaleas) for the purpose of blocking light from oncoming vehicles.

Blinker light

It is a traffic safety facility installed at the divergence end of the road to alert the driver to the branch point.

Cushion drum

Before a fixed structure, such as a shunting edge of a road, a roadside pier, or a signpost, that may collide with a vehicle that has deviated outside the road, reduce the impact of a vehicle collision and prevent damage to vehicle occupants. This facility is installed to reduce the amount. A bag of water is usually packed in a yellow plastic container.

Island

It is an island in which the dead space of the conduit is surrounded by curbstones and raised from the road surface so that the traffic flow inside the intersection and the parking lot of the rest facility can be guided safely and accurately, but for other purposes and purposes Is being used.
It is provided mainly between lanes to limit the entry of vehicles and to protect the safety of pedestrians.
The place where the toll booth facilities are located at the interchange toll booth is also called the island.

Windstorm Fukinaga I

It is installed in a place where the wind is strong and susceptible to side winds, etc., so that the driver can know the strength and direction of the wind.

Snow pole

We have installed poles on the left shoulder of the road and the median strip as a target for gaze guidance and snow removal work when visibility is poor due to snowstorms.
The installation interval is about 50 to 100 m according to the alignment of the road, the height is about 2.0 to 3.0 m, and there is also a stretchable structure that doubles as a kilopost mark.

Separator Want to hang out

The purpose is to separate the lanes in the direction of the round trip (up and down lines), and side bands, center band, median strip, protective fences (guard rails, concrete walls), trees, gardens, etc. are installed.