(17 Mar 2021, 2:53 pm)Andreos1 wrote Free travel as seen in several European cities would be the dream!
It opens up the network to all and encourages people to make the switch.

I don't understand why barriers should be put in to place for some CAT passes though. 
If it takes one car off the road, then surely that's a good thing. If it takes several off, then even better.

I definitely agree, I'd love nothing more than for everyone to have access for free public transport, but realistically that's not going to happen on such a large scale. 
Maybe once we have a wider adoption of electric buses something like that might be viable due to the considerably lower running costs, but I can't see that happening any time soon.

The other issue is the taxes lost from all those cars no longer being on the road and using fuel would have to be made up from somewhere (actually taxing large international corporations would be a good start!)

Barriers wouldn't be put  in place for some passes, they would be in place for all passes, both disabled and older people (and anyone else who may be entitled to a concessionary pass).

As I said further up, for me you either offer free travel to everybody, nobody, or those who need it (which arguably those entitled to a disabled pass could come under, depending on their particular case).