ISO 29281:2011 specifies FAST services, i.e. FAST networking & transport layer protocols for single-hop communications, N-hop broadcast communications, ITS-MUX, and ITS station-internal forwarding; FAST service for 15628 CI (DSRC CI) support; FAST service for 15628 application support; and the related support of the MN-SAP and MF-SAP.