The present document specifies the Basic Transport Protocol (BTP) for the transport of packets among ITS stations. It
resides on top of the GeoNetworking protocol specified in ETSI EN 302 636-4-1 [5] and ETSI TS 102 636-4-2 [i.2] and
below the ITS-S facilities layer. It provides an end-to-end, connection-less and unreliable transport service.