Congestion prediction on Expressway during Obon period [national version]

Beware of traffic jams on Out-bound on August 9th (Sat) and 10th (Sun), and on the In-bound on August 11th (Mon/Holiday), 15th (Fri), and 16th (Sat)!

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Congestion prediction on Expressway during Obon period [national version]

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July 11, 2020
East Nippon Expressway Co., Ltd.
Central Nippon Expressway Company Limited
West Nippon Expressway Company Limited
Honshu-Shikoku Expressway Company Limited
Japan Road Traffic Information Center (Public Interest Foundation)

NEXCO EAST / NEXCO CENTRAL / NEXCO WEST / JB Honsha / Japan Road Traffic Information Center, Inc. Obon period (11 days from Thursday, August 7, 2025 to Sunday, August 17, 2025) Traffic congestion forecast due to traffic concentration at Expressway in (traffic concentration congestion over 10 km) ^(*) will be presented.
To ease traffic congestion, Please cooperate with us by changing the day or time of your use, or otherwise spreading out your use of the facility.

1. 1. Congestion forecast

Number of traffic jams over 10km

　Total of 479 trips (August 7 to August 17)

Image image of the Out-bound line for the number of traffic jams of 10 km or more

Image image of the In-bound line of the number of traffic jams of 10 km or more

This also includes traffic congestion forecasts due to planned long-term construction restrictions. For details, please refer to "Attachment 3 [PDF: 487KB]".

Prediction of particularly long traffic jams for each company

PA: Parking area, IC: Interchange, TN: Tunnel, JCT: Junction, BS: Bus stop

Image image of each company's particularly long traffic jam forecast

○○ Road (△△ Road) means "a traffic jam that stretches from ○○ Road to △△ Road."
For details on traffic jams of up to 30 km or more, please refer to Appendix 1 [PDF: 217 KB]. For information on how to avoid traffic jams, please refer to Appendix 2 [PDF: 678 KB].

Please note that traffic congestion predictions are based on past traffic congestion records and recent traffic conditions, but may differ from actual traffic conditions due to traffic disturbances such as accidents, weather conditions, etc. Check the latest road traffic information before you depart and during your trip. Road traffic information can be found on the following website.

Comparison with last year (reference)

Last year (2024), people refrained from traveling during the Obon period due to bad weather, so the number of traffic jams this year is expected to increase compared to last year. Note that last year's figures include traffic jams caused by accidents, etc.

The number of traffic jams over 10km includes the number of traffic jams over 30km.
The forecast for 2025 was compiled for the 11 days from Thursday, August 7, 2025 to Sunday, August 17, 2025.
2024 Results are totaled for 11 days from 2024 Thursday, August 8 to 2024 Sunday, August 18

2. Key points for alleviating traffic congestion

Be careful of slowing down in areas where warnings are issued, such as when In-bound!
While driving, please avoid stepping on the brakes unnecessarily and maintain a sufficient following distance!
Please refrain from changing lanes recklessly during traffic congestion, as this may lead to further worsening of traffic congestion!

3． Please drive safely

Please cooperate by "wearing seat belts in all seats" and "taking frequent and early breaks." Also, please pay attention to what is ahead as you drive on Expressway and be aware of rear-end collisions at the end of traffic jams.

4. Eliminate wrong-way driving -Expressway are one-way streets -

Driving the wrong way is a dangerous act that can be life-threatening. U-turns and backing up are strictly prohibited. If you hear or see information about wrong-way driving, slow down, keep a sufficient distance, and keep a close eye on the movements of the vehicle ahead. For details, please see below.

https://www.w-nexco.co.jp/safety_drive/highway_rule/reverse/one-way/

5. Holiday discounts will not be applied during the Obon period.

To avoid increased traffic congestion, holiday discounts will not be applied during this period. Please see below for details.

https://www.e-nexco.co.jp/pressroom/cms_assets/pressroom/2025/03/14/pdf.pdf

6. Information regarding Expressway Tour Passes

If you are using Expressway outside of the Obon period, please consider using the Expressway Tour Pass, which allows you to get on and off Expressway in eligible areas for a fixed price during the period of use.
In addition, we are currently running a campaign where if you use the service only on weekdays, you will receive additional ETC mileage service points worth 15% of the sales price.

Expressway tour pass search site

(Sales exclusion period: Thursday, August 7, 2020 to Sunday, August 17, 2020)

Image link (external link) to download page of Adobe Acrobat Reader

To view the PDF file, you need the Adobe Systems plug-in software "Acrobat Reader (Japanese version)". If you do not have Download from here (free)Please use it.