# Seelisberg Tunnel operations and safety

> Developing situation record from CLSTR: https://clstr.news/situations/seelisberg-tunnel-operations-and-safety
> Updated: 2026-10-29T13:36:18.000Z. Sources: 2. Developments: 2.

Following a fatal accident on August 14, the Seelisberg Tunnel in Switzerland has returned to normal operations. The accident, involving a vehicle crashing through a control center gate, caused a fire that destroyed equipment and severed the power supply. 

For six weeks, the tunnel operated under a 60 km/h speed limit using emergency lighting and a diesel generator. After repairs to transformers and cable systems, the speed limit has been restored to 100 km/h. 

In light of the tunnel environment, safety guidance has been issued for motorcyclists to manage challenges such as fluctuating temperatures, artificial lighting, and exhaust fumes. Recommendations include using clear visors with integrated sun visors and Pinlock inner visors to mitigate visibility issues caused by light transitions and fogging.

## Timeline

### 2026-10-29: Seelisberg Tunnel safety tips for motorcyclists

Motorcyclists are advised to use clear visors and Pinlock technology to navigate the lighting and temperature challenges of Switzerland's Seelisberg Tunnel safely.

2 sources. https://clstr.news/cluster/seelisberg-tunnel-safety-tips-for-motorcyclists

### 2026-10-05: Seelisberg Tunnel returns to normal operations after fatal accident

The Seelisberg Tunnel has resumed normal operations and 100 km/h speed limits following repairs to its southern control center after a fatal accident on August 14.

2 sources. https://clstr.news/cluster/seelisberg-tunnel-returns-to-normal-operations-after-fatal-accident

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Cite as: Seelisberg Tunnel operations and safety. CLSTR, https://clstr.news/situations/seelisberg-tunnel-operations-and-safety