sentences:  The amended Directive gives the EU Member States the possibility of varying tolls according to a number of factors such as distance travelled, place, infrastructure type and speed, vehicle characteristics, time of day and congestion level.In addition, the EU Member States are obliged to include all vehicles over 3.5 tonnes maximum laden weight after 2012, and after 2010, the tolls must be differentiated according to the environmental performance of the vehicle.Recently, the European Commission proposed a new, second amendment to the Directive 1999/62/EC, enableling EU Member States to integrate the cost of air and noise pollution caused by traffic in tolls levied on heavy goods vehicles and allowing tolls to be calculated on the basis of the cost of congestion imposed upon other vehicles during peak periods.