geleinkelis

Could you clarify what you mean by "geleinkelis"? The term isn’t widely recognized in public transport literature, so there are a few possible interpretations. If you’d like, I can proceed with one of these:

- A neutral, concise wiki-style article about the concept of yellow-coded lines in urban rail networks (a general overview of how color-coding is used for line designation).

- A concise article about a real or fictional transport system named Geleinkelis, treated as a neutral encyclopedia entry.

- A linguistic/etymological note about the Dutch term and its usage in transit maps.

Please specify which interpretation you want, and I’ll generate a concise, neutral article under 300 words.