The propane gas tanks in the immediate vicinity of the switch. The disadvantage of these heaters is that the tanks must be filled. Contrary to electric heaters which are operated with catenary power. If chunks of ice falling from a train and block the switch tongue, these systems come to their limits. Rorschach Hafen, Switzerland, March 4, 2016. (3/3)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/70981241@N00">Kecko</a> from Rural area, Eastern Switzerland
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/kecko/25265372660/">SBB - Gas Switch Heater</a>