Traffic congestion forecast for Expressway during the Silver Week period [Tokyo metropolitan area edition]

We're predicting traffic congestion on par with Golden Week (up to 45km)!
Please cooperate by using traffic congestion forecasts to distribute your travel time.

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Traffic congestion forecast for Expressway during the Silver Week period [Tokyo metropolitan area edition]

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August 28, 2020
East Nippon Expressway Co., Ltd., Kanto Regional Head Office
Central Nippon Expressway Company Limited, Tokyo Regional Head Office

　東日本高速道路株式会社（NEXCO東日本）関東支社および中日本高速道路株式会社（NEXCO中日本）東京支社は、シルバーウィーク期間［令和8年9月19日（土）～9月23日（水）の5日間］において関東甲信地方および静岡県内の高速道路で予測している10km以上の交通集中渋滞をお知らせします。期間中は広範囲で混雑が見込まれることから、渋滞予測を参考に分散利用のご協力をお願いします。
　渋滞予測は過去の渋滞実績と最近の交通状況を踏まえたものであり、事故などの交通障害や天候の影響などにより実際の渋滞状況と異なる場合がありますので、出発前に最新の交通情報をご確認ください。なお、9月19日（土）～23日（水・祝）は休日割引が適用されませんのでご注意ください。

1. 1. Congestion forecast

◆Overview of traffic congestion prediction

With a five-day holiday from the 19th to the 23rd, we predict that traffic congestion will be as severe as during the Golden Week in 2026, which had the same day-of-the-week arrangement.
- Compared to May 2nd (Sat) - 6th (Wed)
We predict that traffic congestion will peak Out-bound lanes on Sunday, September 20th, and on In-bound lanes on Monday, September 21st and Tuesday, September 22nd.
Traffic jams exceeding 10km are expected to increase by 5 times compared to the Golden Week period.

(1) Prediction of traffic congestion over 10km (number of times per day)

Image of Out-bound congestion forecast of 10km or more (number of times per day)

Image of traffic congestion forecast for distances over 10km (number of times per day) heading in In-bound direction

This does not include traffic congestion due to construction restrictions. Traffic congestion forecasts due to renovation work during Silver Week are as follows:
Please check the renewal work on the E20 Chuo Expressway and E19 Nagano Expressway.

(2) Prediction of particularly long traffic jams (over 30 km)

Image of prediction for particularly long traffic jams (over 30km) — <The largest values in each direction are written in bold.>

For a more detailed list of traffic congestion forecasts, please see Appendix-1 [PDF: 848KB].

(3) Comparison with Golden Week 2026 (number of traffic jams)

The unit of the numerical value in the table is "times"

Traffic jam scale	① Silver Week forecast ^*1			② Golden Week results ^{2, 3}			Difference (①-②)
Traffic jam scale	Out-bound line	In-bound line	Total	Out-bound line	In-bound line	Total	Out-bound line	In-bound line	Total
Number of traffic jams over 10km	48	69	117	44	68	112	＋4	＋1	＋5
Number of traffic jams of 30 km or more	5	4	9	8	3	11	▲3	＋1	▲2

The forecast for the 2026 Silver Week holiday period is based on data collected for the five-day period from September 19th (Saturday) to September 23rd (Wednesday), 2026.
The data for Golden Week 2026 covers the five-day period from Saturday, May 2nd to Wednesday, May 6th, 2026.
The actual figures include traffic congestion caused by accidents and other factors.

2. Useful driving information

We provide a variety of information to help you with your driving, including real-time road traffic information and congestion forecasts.
For more details, please see Attachment-2 [PDF: 619KB].

3. To our customers

This page contains important requests for our customers to follow, as well as our customer service initiatives (including measures to reduce congestion).
For more details, please see Attachment-3 [PDF: 757KB].

4. Holiday discounts do not apply during Silver Week.

　渋滞の激化を避けるため、期間中は休日割引が適用されません。
　詳細は以下をご参照ください。
https://www.c-nexco.co.jp/images/important_news/2421/cbb8b0bdc223e65cc9293cdcc4bf994e.pdf

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.