I have great sympathy for the disabled, and it's looking like a real conundrum for them. But for the vast majority - the able-bodied - the equation is simple:-

Park Legally = No Fine

If every able-bodied twerp who dumps his/her car anywhere convenient to THEM, but regardless of its effect on others (presumably because they're too bone-idle or tight-arsed to park in the 'official' parks and parking spaces) observed that equation, there wouldn't be a need for CCTV cameras or traffic wardens.

Like a lot of things, those who are wailing and whining the loudest are the very ones who've brought it down on their own heads - just like the serial speeders who complain about safety cameras.