- Early human flag signals. The prominent object is the shelter for the human, but the signal flag itself is difficult to see.
- Stations and extensions where a similar colour or a barrage of colours comes close to, or overlaps its pax or goods icon
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- Station extensions where a similar colour or a barrage of colours comes close to, or overlaps its pax icon
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- Canal and Canal bridge difference slightly difficult to see at first glance
- Stations where a similar colour overlaps its pax or goods icon
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- No idea what that small sign does, unless hovered over
- Stations where a similar colour or a barrage of colours overlaps its pax icon
