facilities layer; ITS-S facilities layer

ITS-S protocol layer in the ITS station reference architecture containing the OSI session, presentation and application layer protocols
NOTE 1 to entry: Within the US, the NTCIP standards call the facilities layer the “application layer”. However, as this term is easily confused with both the OSI application layer and the application entity, the term should be avoided and qualified when used (e.g. OSI application layer).

Application Area: Communications