blog.crox.net

The 2006 Dürrenast train disaster occurred on May 17 when a runaway BLS maintenance train with failed brakes sped downhill from Frutigen towards Thun, ultimately crashing and killing three people. As the train gained uncontrollable speed, dispatchers faced critical choices, similar to the theoretical "trolley problem": routing the train towards populated or obstructed lines would potentially cause greater casualties. Ultimately they opted for a crash against stationary work trains in Dürrenast to limit wider harm.

Max S wrote a detailed account of the events on Medium.

On SWI swissinfo.ch you will find an article about the events, as well as a link to an SRF film (in German with subtitles in several languages).

8 years later there are still issues on Raspberry Pi / Raspbian with WiFi power management causing disconnects and generally bad performance.

I've found a reliable method to disable WiFi Power Management for the on-board WiFi chip (brcmfmac) here: NetworkManager WiFi Power Saving.