By car

Road rules

Driving license issued by EU member states are recognized in Poland.

Right side traffic.
Highest speed: 50 km/h (5am-11pm) and 60 km/hour (11pm - 5am) in towns, 90 km/h outside urban areas, 110 km/h on single carriageways and 120 km/h on dual carriageways, 130 km/h on motorways.
Day lights must be used all day, all year.
Permissible alcohol content in blood is 0.2 promille.
Seatbelts must be worn by both front seat and back seat passengers, with children up to the age of 12 and up to 150 cm tall using special certified seats.
It is not allowed to use hand-held mobiles while driving. A loud-speaking phone system is permitted.
Cars must be equipped with fire extinguisher, first-aid kit and hazard-warning reflexive triangle.

Watch out:

Some roads are in rather bad condition. There are a lot of unguarded railway crossings.
Buses moving from a bus stop have the right of way.
Trams have the right of way at equivalent intersections.
In big cities there are numerous roundabouts, the traffic is often coordinated by the police.
Polish fines range from 50-500 PLN.