This has pros and cons. Biggest pros are it cuts down on congestion, pressures bus service providers to create new services which benefit everyone, help young people get better jobs as they can access jobs further away, could cut down on young drivers making roads safer, and it reduces pollution as less young people will be using cars. The "living wage" comes in at 25, so to me it makes sense that people under that age shouldn't have to pay for services that should be public (that's another conversation).
The biggest problem is, you guessed it, money.
Thoughts?