This must be a familiar situation to any software developer. You come up with a clean, elegant design that meets the customer’s stated needs. Then at the last minute they come up with a new requirement.

So you end up with this. Someone I won’t name has described it as looking like “the world’s most disturbing sex toy”.

Coming up with an elegant way to add a corridor connection on the front of a train is a challenge that’s defeated generations of industrial designers. Even the better results have been functional rather than beautiful. But it does help if the door at the front had been a requirement from the start.

(Photos from Transport Briefing)