Curtesy of the Continental company, here is a roundup of essential information about regulations for winter equipment on trucks and buses in 2017/2018.
What are the rules concerning the use of winter tires e.g. in Poland, Norway or Slovenia?
It’s good to become familiar with the respective regulations in each country before setting out on the road in order to avoid unpleasant surprises and fines.
The site www.trafficban.com contains tabs dedicated to each country, with information about the obligation (or lack thereof) of having snow chains, using appropriately designated tyres, and whether the use of studded winter tyres is allowed.