Some alternative Tube maps are silly. Some are satirical. Others prompt deep thought. Then there are constructions such as this, which demonstrate sheer persistence and resolve.
Heavily influenced by Harry Beck's London Underground map, graphic designer Cameron Booth has put together this colossal chart of US Routes. It follows on from a previous map showing Interstates in a similar style. Both are available to order as posters via the links above.
See our comprehensive list of alternative Tube maps here.
With thanks to Deirdre Molloy for the tip.