The Oirase-Towada Utilization Council and the Oirase Stream Ecotourism Project Executive Committee have been continuously implementing private car traffic restrictions on the Oirase Stream section of National Route 102 since 2003 to preserve the natural environment and alleviate traffic congestion.

This initiative is part of a social experiment aiming to create an experience of the entire streamside as a "Nature Museum," looking toward the future after the opening of the Aobunayama Bypass. In 2026, the restrictions will be enforced from Monday, September 7 to Sunday, September 13, which is more than a month earlier than the usual late October timeframe.

Due to this significant change in scheduling, we urge tourists and all parties in the travel industry to be fully aware when planning trips and arranging transportation.

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■ Purpose and Background for the Schedule Change

This experiment aims to reduce the impact of exhaust gases on the trees by limiting vehicle traffic, creating a safe and tranquil environment for pedestrians to enjoy nature, and to test tourism methods that achieve a balance between environmental conservation and appropriate utilization.

This year, the schedule has been moved to early September to test the optimization of the traffic environment during "early autumn in Oirase," avoiding the peak congestion of the autumn foliage season.

■ 2026 Event & Restriction Overview

* **Period**

**Monday, September 7, 2026 – Sunday, September 13, 2026**

* **Restricted Section**

National Route 102, Oirase Stream Section (Soube Intersection to Nenokuchi Intersection)

### 【Restriction Times and 対象車両】

| Dates | Restriction Time | Restricted Vehicles | | :--- | :--- | :--- | | **9/7 (Mon)** to **9/11 (Fri)** | 10:00–16:00 | (details truncated) |

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  • Source: PR Times
  • Category: News