The old risk of grounding sign on the approach to Achterneed level crossing, when it was an automatic open crossing. The crossing was subsequently upgraded with the addition of half barriers and this sign was replaced with the modern version.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/48048571@N04">Glen Wallace</a> from Inverness, Scotland
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/inverness_trucker/11255830664/">Achterneed Level Crossing</a>