the only time i've wished i was red/green colourblind
speaking of colourblind.....in order to assist their semi-sighted patients, the route between old st tube station and moorfields eye hospital in london has a green line painted on the pavement leading from the exit of the tube to the door of the hospital.
great idea, except the pavement runs along a red-route and so there are double red-lines right next to it. i wonder how many patients they lose because of that?