May 19th Carparks

With carparks having designated disabled parks, parks for mums with prams and the associated toddler(s)s and now this new one - carparks for 65+ - I often wonder how on earth do they monitor this? OK for disabled parking you display a special card. But what do the others do? Do Mums leave a pooey nappy on the dash and oldies an incontinence nappy?  I wonder!