...you have to put you car registration number in car parking machines?
I see no reason for it other than the car park wanting to make more money!
Surely if I have paid for a space for an hour and only use half of it, then it is up to me if I want to give someone else my ticket so they can use the rest of it?
I used to do this quite frequently, and have had people do it for me in the past, but now it is no longer possible in most car parks I go to.
Hmmmmph, sorry....not a particularly important problem, but it just annoys me!