I live in London which has all-but banned cars in the city centre (they're not banned, but there is an expensive congestion charge which means that in practice

I live in London which has all-but banned cars in the city centre (they're not banned, but there is an expensive congestion charge which means that in practice most traffic in the centre is buses, taxis, or very wealthy people). However, there is an exception for anyone with a "blue badge" holder (for those with disabilities which prevent easy mobility - wheelchair users and others). These people not only get free car access to the city centre (which now has a lot less traffic because nobody else is driving there), but also get to park in places that most people are not allowed to, etc.