This article is based upon a translation of the German language version as at May 2010.

The lead section of this article is based upon a translation of the Italian language version as at January 2011.

Where inline citations are absent, this article is based upon a translation of the Italian language version as at July 2011.

The site has also established nine projects containing translations of the main English language version of the wiki: Dutch, French, German, Hebrew, Italian, Portuguese, Spanish, Swedish, and Turkish.

This article is based upon a translation of the Spanish language version, and of part of the German Wikipedia article Trolleybus Solingen, as at September 2011.

This article is based upon a translation of the Italian language version.