\todo{include long version of abbreviations at first mention}

\textbf{AU}: application unit

\textbf{CCU}: communication \& control unit

\textbf{ETSI}: European Telecommunications Standards Institute

\textbf{ITS}: Intelligent Transportation Systems

\textbf{LS}: GeoNetworking Location Service

\textbf{LT}: GeoNetworking Location Table

\textbf{OBU}: on-board unit

\textbf{RSU}: road-site unit

\textbf{VANET}: vehicular ad-hoc network