I live in Poland and in big cities that's not an issue but in cities other than Warsaw and Kraków you still need to check when the bus will depart. For rural areas reliability is an issue. If for some reason the bus won't come than the next one is in two hours.

Trains are good enough but often delayed. Mostly 5 to 15 min but there is always the odd one out with 24h that is always talked about at parties.

Trams, trolleybuses, metro and cycling paths are good enough. There are bicycle rental networks that work in a pinch.