About the installation of the provisional two-lane Expressway
Large of trial installation locations for division fences on long bridges and tunnels-
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- Press Room
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- About the installation of the provisional two-lane Expressway
August 3, 2023
East Nippon Expressway Co., Ltd.
Central Nippon Expressway Co., Ltd.
West Japan Expressway Co., Ltd.
NEXCO EAST, NEXCO CENTRAL, and NEXCO WEST are proceeding with the installation and verification of partition fences instead of rubber poles as a measure to prevent head-on collisions on Expressway in temporary two-lane sections that are prone to serious accidents.
So far, the Ministry of Land, Infrastructure, Transport and Tourism announced on June 15, 2018, "Regarding the wire rope installation policy for temporary two-Expressway" and on March 31, 2020, announced "New wire rope installation policies for temporary two-lane Expressway". Wire Rope Installation Policy”, we proceeded with the installation of wire ropes for the civil engineering department and small and medium-sized bridges *1, and completed the installation by the end of FY2022.
Regarding long-span bridges *2 and tunnels, after passing the "Technical Review Committee on Measures to Prevent Head-on Collisions on Expressway (5th Meeting)" on June 8, 2021, center pipes and center blocks will be tested from October 2021. installed and started testing.
Based on the decision to Large the trial installation locations at the "Technical Review Committee on Measures to Prevent Frontal Collisions on Expressway (6th Meeting)" held on December 6, 2022, center pipes and We have decided to install the center block sequentially, so we will let you know. We will continue to verify the effectiveness and applicability of the system as a head-on collision prevention measure, and work on traffic safety measures in the provisional two-lane section.
- Small and medium-sized bridges: Bridges with a bridge length of less than 50 m
- Long bridge: A bridge with a bridge length of 50 m or more
Section fence trial installation location
We will further Large the trial installation of division fences to 20 routes nationwide, totaling approximately 13km Note 1 (Attachment 2 [PDF: 8.7MB]). In addition, trial installation place may be changed based on consultation with related organizations.
| company name | Number of routes | Installation type | Number of installation locations | Installation extension Note 1 | Scheduled time of installation |
|---|---|---|---|---|---|
| NEXCO EAST | 8 routes | long bridge | 16 places | About 4.7km | R5 year onwards |
| tunnel | 2 places | About 0.5km | R6 year onwards | ||
| subtotal | 18 places | About 5.2km | |||
| NEXCO CENTRAL | 5 routes | long bridge | 17 places | About 3.8km | R6 year onwards |
| tunnel | One place | About 0.2km | R6 year onwards | ||
| subtotal | 18 places | About 4.0km | |||
| NEXCO WEST | 7 routes | long bridge | 6 places | About 3.8km | R5 year onwards |
| tunnel | 3 places | About 0.6km | R6 year onwards | ||
| subtotal | 9 places | About 4.4km | |||
| total | 20 routes | long bridge | 39 places | About 12.3km | |
| tunnel | 6 places | About 1.3km | |||
注1
構造物延長であり、実際に設置する延長とは異なります
What is a division fence?
The following technical performance has been confirmed, and it can be installed within the construction limit as one of the "fences or piece stops on the road".
- Expressway, safety according to the "guard rail" is ensured.
- It contributes to ensuring the safe and smooth passage of vehicles and does not hinder the passage.
Attachment
- （別添1）暫定二車線の高速道路の正面衝突事故防止対策の設置状況【PDF：201KB】
- (Attachment 2) Overview of Trial Installation of Separation Fences in Long-span Bridges and Tunnel Sections [PDF: 8.7MB]
- (Reference) Long-span bridge/Tunnel section where trial installation has been completed [PDF: 3.9MB]
reference
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