Directive 1999/62/EC (HGV-001), also known as the Eurovignette Directive, stipulates that Member States are allowed to implement tolls and user charges if certain conditions are met. For instance, tolls can only be used for highways, for other forms of motorways which are comparable with multiple lane roads, for the use of bridges, tunnels and mountain passes. Member States without a network of motorways or two-lane roads (with separate lanes) are allowed to use tolls and user charges for the roads which are technically in the highest road category.
In 2011 the original Directive was replaced by Directive 2011/76/EU (HGV-002) on the carriage of goods by road.
Under the new framework, Member States can apply higher prices for tolls during rush hours. Income generated by tolls have to be used to improve the road infrastructure, 15% of which goes to the Trans-European Infrastructure Network (TEN-T). Member States are encouraged to do so, but they are not obliged to. The aim of the new Directive is to enable Member States to charge heavy goods vehicles for air pollution and noise pollution, which is based on the ‘polluter pays’ principle.
See also road transport-related: chapter 19 on the Ecocombi's (Long and Heavy Trucks, LHT)
Some relevant documents:
HGV-002: Directive 2011/76/EU of the European Parliament and of the Council of 27 September 2011 amending Directive 1999/62/EC on the charging of heavy goods vehicles for the use of certain infrastructures (European Parliament and the Council)
HGV-001: Directive 1999/62/EC of the European Parliament and of the Council of 17 June 1999 on the charging of heavy goods vehicles for the use of certain infrastructures (European Parliament and the Council)