It does not necessarily mean that this external cost is fully internalised. It also gives no information on the absolute size of the charge or its revenues. For more detailed information on tax and charging structures, see the tables at the end of this fact sheet. A green tick (new measure) and total numbers of measures means an advancement in internalisation, a red tick (removed measure) and total numbers of measures means a decay in internalisation. A black colour of the total numbers means no change.Detailed information on fuel tax levels, structures and trends is provided in the fact sheet TERM 2002 21 EU - Fuel prices and taxes. More information on external costs is provided in fact sheet TERM 2002 25 EU - External costs of transport.