Tickets

UK train tickets seem logical from the viewpoint of an engineer or the ticket machine. A consistent watermarked, orange-bordered strip is printed in black ink of three font sizes.

As a traveller however, you have to identify the correct ticket as you walk towards the inspector, or they walk towards you. This is impossible to do quickly and efficiently since they are nearly indistinguishable.

Applying a simple hatch to, say, every 'outward portion' or using a supersize font and generally better hierarchy of information would solve this very easily. Of course the engineer might protest that it will use more ink...

Perhaps I'll give it a go.