If you lived in England in the 70s and 80s, there wasn't the proliferation of disabled parking bays and stickers you see today.
It was quite simple. If you were disabled, you drove one of these.
Always 3 wheels. Always light turquoise. Always parked in the Springs in Wakefield!
One mirror, electric (yep, 30 years ago), and you didn't even need a driver's license!