Should Public Transport Be Free?

In many cities, public transport is often the easiest and cheapest way to get around. It’s more environmentally-friendly because fewer petrol and diesel cars are on the road. It’s also free, if you visit Luxembourg. Its the first country in the world to make public transport zero-cost for everyone.

Is it the solution for congestion and pollution, or will the cost of a ticket be paid in other ways? {Al Jazeera}

Presenter: Nick Clark