AC: Alternating current.

AFIR: Alternative fuel infrastructure regulation.

BEV: Battery electric vehicle.

CAGR: Compound annual growth rate.

COVID-19: COronaVIrus Disease 19.

DC: Direct current.

EAFO: European Alternative Fuels Observatory.

EC: European Commission.

ECAs: Emission Control Areas.

EEA: European Economic Area.

EEZ: Exclusive Economic Zone.

EMEP: European Monitoring and Evaluation Programme.

ETS: Emissions Trading System.

EV: Electric vehicle.

GHG: Greenhouse gas.

IWW: Inland Waterways.

LNG: Liquefied natural gas.

LNT: Lean NOx trap.

LPG: Liquefied Petroleum Gas

LTO: Landing and takeoff.

OPS: Onshore power supply.

PHEV: Plug-in hybrid electric vehicle.

MS: Member States.

NEC: National Emissions Ceiling.

RED: Renewable Energy Directive.

SCR: Selective Catalytic Reduction.

TEN-T: Trans-European Transport Network.

TWC: Three-way catalyst.

UNECE: United Nations Economic Commission for Europe.

WAM: With additional measures.

WHO: World Health Organization.