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Home » NEXCO West Japan Regarding ensuring safety and security on expressways during heavy rains and typhoons in FY2020

NEXCO West Japan Regarding ensuring safety and security on expressways during heavy rains and typhoons in FY2020

NEXCO West Japan
Regarding ensuring safety and security on expressways during heavy rains and typhoons in FY2020
– Responding to the increasing severity and frequency of heavy rain disasters – ……
NEXCO West Japan (Kita-ku, Osaka, President: Hidekazu Maekawa) continues to improve road slopes for the purpose of disaster prevention and mitigation in response to natural disasters such as torrential rains and typhoons that have become more severe and frequent in recent years. In addition to taking measures such as strengthening traffic regulations, we will actively disseminate information on the implementation status of traffic regulations. In addition, when traffic restrictions are lifted due to torrential rains, typhoons, etc., we will conduct inspections, cleaning, etc., and take appropriate measures to ensure that customers can drive safely.
[Recent weather conditions] 1. Overview of recent weather conditions (increasing number of short-term heavy rains) 2. Increasing severity and frequency of heavy rain disasters (case studies) 3. Heavy rain conditions in July 2020
[Main initiatives in fiscal year R6] 4. Public relations to customers 5. Advance preparations (daily preparations) 6. NEXCO West Japan’s disaster cases and efforts to secure traffic 7. Regarding traffic during torrential rains, approaching typhoons, etc. please
1. Overview of recent weather conditions (increase in short-term heavy rain) ・The average annual number of occurrences of 50 mm or more of hourly rainfall nationwide in the last 10 years (2014-2023) (approximately 330 times) is based on statistics.
Approximately 1.5 times increase compared to the average annual number of occurrences (approximately 226) during the first 10 years of the period (1976-1985)
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2. Increasing severity and frequency of heavy rain disasters (case study)
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3. Heavy rain situation in July 2020
・From July 10th, due to the influence of the rainy season front, rain clouds have developed locally in northern Kyushu, and in some areas (Fukuoka Prefecture and Oita Prefecture), rain clouds have formed in a line.
Very heavy rain observed in a short period of time due to the formation of a rain belt
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・Extended road closure and rainfall status based on NEXCO
meteorological observation station data (7/7-11)
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Although only about 8% of the total length of the road was closed, a disaster occurred that required a long period of time to recover (see example (1) below)
4. Public relations to customers
・If bad weather such as heavy rain is expected, obtain detailed weather forecasts from weather companies and consider the impact on expressways.
We will notify you of possible road closures in advance. In this case, sections that may be closed within 24 hours
Provides easy-to-understand information such as displaying the predicted time on a map and displaying a legend by color (NEXCO West Japan HP
Posted on).
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・I-Highway, an app that provides traffic conditions, etc., provides real-time traffic information such as road closures due to rain and disasters.
We notify you of road closures, etc. When going out when heavy rain is predicted, check the latest traffic information.
Thank you for your understanding.・I Highway (NEXCO West Japan) ・Expressway impact information site ・Japan Road Traffic Information Center (JARTIC) https://www.jartic.or. jp/
・If a disaster occurs, record the damage situation, restoration work status, expected release of road closures, information on the cancellation, etc., depending on the situation.
We will disseminate information from time to time using public relations media such as public announcements, our website, and SNS.
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・Public relations using TV commercials, radio, and digital signage at rest facilities, and information on future conditions based on weather forecasts.
We will actively engage in public relations, such as holding joint press announcements with related organizations.
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5. Advance preparation (daily preparation)
・We are working on the following preparations as a countermeasure against torrential rains and typhoons.
1. Preparation of materials and equipment for disaster response 2. Cleaning, inspection, repair, etc. of drainage equipment to prevent poor drainage
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・We are looking back at past responses and working to strengthen our disaster prevention response capabilities. 1. Strengthening personnel and systems capable of responding to disaster prevention 2. Conducting disaster prevention drills before the flood season and holding meetings to share response know-how 3. Initiatives regarding collaboration with related organizations (continuation of face-to-face relationships)
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6. Case studies of disasters and efforts to secure traffic at NEXCO West Japan ・If there is an impact from torrential rain or a typhoon, take measures to restrict traffic before the disaster occurs or promptly close the road when a disaster occurs.
The entire group will work together to carry out emergency restoration and secure traffic as early as possible.・Efforts to secure early traffic using 4 lanes
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Case study (1) 2020 Kyushu branch office Oita Expressway (between Asakura IC and Haki IC) Emergency countermeasures against slope collapse disaster were implemented, and recovery work was carried out using two-way traffic using the up lane of the four lanes. Secure transportation while doing so.
It was conducted.
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・Efforts to secure early transportation due to the effects of the typhoon Example (2): We will clean up fallen leaves and leaves scattered on the road surface due to the typhoon, and strive to promptly lift the road closure.
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After the typhoon passes, a large amount of branches and fallen leaves are scattered on the road surface. Although removal and cleaning work is being carried out promptly,
Please understand that it may take a considerable amount of time to complete. 7. Request regarding traffic during torrential rains, approaching typhoons, etc. ・It is important to check the latest information such as weather and traffic conditions. Please check the latest traffic information on iHighway etc. before heading out. ( – If you are driving on an expressway and a road information board displays “Road Closed”, please immediately go to the nearest location to ensure safety.
Please release it from the IC. – Some rest facilities (SA/PA) may fall under landslide warning areas announced by the Japan Meteorological Agency or local governments.
vinegar. In this case, to ensure safety, the store may be closed or the entire rest facility may be closed and evacuation guidance may be provided.
There is also. We will strive to provide detailed information in a timely manner, and prioritize the safety of our customers.
We therefore appreciate your understanding and cooperation.
As we approach the rain and water season, there may be traffic restrictions this year due to the effects of localized heavy rains or typhoons, so please check the heavy rain information in advance. In addition, when traffic restrictions are lifted, we will promptly carry out inspections, cleaning, and other work to ensure safe driving for our customers, so we ask for your continued understanding and cooperation.

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