Glossary of "road maintenance" technology and equipment

Road maintenance is a collective term for cleaning work, planting work, snow and ice countermeasure work, traffic accident restoration work, and pavement improvement work and bridge reinforcement work that are necessary to maintain and manage the road. It says.

Maintenance work Koji

Maintenance work is mainly improvement work for improving the functions of Expressway, earthquake-proof reinforcement work for bridges for the purpose of proactive measures against disasters, disaster prevention work on slopes, restoration work due to accidents, etc. It means repair work.

Maintenance work Hosenzagyo

This is an indispensable work (work) for maintaining and managing the road. The main work is cleaning the road surface and incidental facilities, and vegetation on the shoulders and SA / PA planting management.

Snow and ice countermeasure work Nostalgia

Even during winter snow and ice, we perform appropriate snow and ice countermeasures such as snow removal work, road surface freeze prevention work, and snow prevention work so that we can use the Expressway.
In snow removal work, there is a method of removing snow from the ladder, in principle, in which two or three snow removal trucks form a ladder while traveling in the geese in order to secure an early road surface and work efficiency.

Speed regulation Fire

Originally Expressway can drive at 80 to 100 km / h, but if the visibility is bad due to rain, fog, snow, etc. or the road surface condition is bad due to strong wind, heavy rain, etc., the traveling speed is 50 to 80 km / h. Refers to being restricted (regulated) by h.
There are speed limits even at construction sites and near construction sites, so please be careful about speed signs when traveling.

Construction regulations Kojikisei

This is a regulation to ensure a safe work space so that no passing vehicles may enter when performing maintenance work or maintenance work.

Lane control Scholarship

It is a regulation to be applied when the work area (construction, accident, etc.) is work in the driving lane.

Overtaking lane regulation Person

Perform when the work range (construction, accident, etc.) is in the overtaking lane and median lane, and the people involved on the road and work machines do not exceed the median lane and do not affect the opposite lane. It is regulation.

Face-to-face traffic regulation Taikomen

For roads with two or more lanes in one direction, one lane is closed and one lane on the other side is used to allow two-way traffic.

Median strip regulation Full time

When carrying out maintenance and repair work / construction in the median strip of a road with two or more lanes in one direction, the people involved in the work on the road and the work machine affect the overtaking lanes on the opposite side, so the overtaking lanes of the upper and lower lines are restricted. Is what you do.

Movement restrictions History , Low speed regulation Come to life

It is a regulation when carrying out maintenance work and construction while moving a tagged car behind the work vehicle while moving.

Sign car Hyoushisha

It is a vehicle equipped with notices for construction notices, traffic congestion notices, and signs that indicate the occurrence of accidents ahead, and is mainly used as a tail warning vehicle or a construction notice vehicle.

Tail guard car Flying skeleton

A vehicle that runs behind a work vehicle for the purpose of alerting passing vehicles and ensuring the safety of the work vehicle during construction work.
This is a vehicle placed for the purpose of calling attention to prevent a general vehicle from colliding with the end of the traffic jam when a traffic jam occurs.

Construction trailer Koji yokosha

This is a vehicle (marker vehicle) loaded with a construction notice sign that operates on the road shoulder at a position of 500 to 1,000 m upstream if necessary when carrying out construction etc. due to movement restrictions.

Construction sign Koji

The construction regulations collectively refer to construction notice vehicles that teach advance construction notices, arrow plates that guide the travel route, safety cones that create regulated sections, and control materials for construction such as robot guides. Is called a construction sign.

Construction notice sign High school student

It is a sign that combines warning signs and auxiliary signs (distance markings) from 1,500 m or 500 m upstream of the construction restriction point to give a construction notice.

Arrow board Yajirushiban

One of the regulatory devices installed to guide traffic vehicles used in traffic regulation in the indicated direction.There are 550 × 900, 450 × 600, etc. plastic, aluminum, iron foldable type, surface Both are front reflection type.

Safety cone

This is a cone-shaped control material used when restricting traffic.
Some are made of rubber and some are made of plastic. There is a hole on the top, so you can attach flags, security lights, etc. The color is yellow + black, red + white stripes, and the height is 30 to 70 cm.
There is also a color cone, which is made of red plastic with no holes on the top and lights up internally to improve night visibility. There is also a color cone with a height of 180 cm called a jumbo cone.

Rubber cone

This is a cone-shaped control material used when restricting traffic. A type of safety cone, which is made of rubber.

robot guide Yudouin

It is an electric robot that evokes a moving vehicle by waving an arm and waving a flag at the tip of traffic regulation. It is commonly known as (product name) "Anzen Taro".

Road inspection Doro Tenken

Road inspection means accurately grasping the condition of roads and evaluating / judging them in order to maintain and repair the roads in good condition at all times so as not to hinder general traffic and third parties. I'm on purpose.