I like this idea better than most local government UBI proposals. E.g., instead of suggesting UBI in NYC just make the trains free. It's not straight currency but it's unlimited transportation on high capacity, environmentally nice(r) systems. Then people can argue over who can make the experience nicer vs who is going to raise the fares. Ridership-wise, many heavy users already have unlimited cards.
(Still, however, not a UBI fan in general).