2019BS ISO 29281-2:2019 Intelligent transport systems. Localized communications. Legacy system support
2018BS ISO 29281-1:2018 Intelligent transport systems. Localized communications. Fast networking & transport layer protocol (FNTP)
2013BS ISO 29281-1:2013 Intelligent transport systems. Communication access for land mobiles (CALM). Non-IP networking. Fast networking & transport layer protocol (FNTP)
2011BS ISO 29281:2011 Intelligent transport systems. Communications access for land mobiles (CALM). Non-IP networking
BS ISO 29281-2:2013 Intelligent transport systems. Communication access for land mobiles (CALM). Non-IP networking. Legacy system suppor has been changed from BS ISO 29281:2011 Intelligent transport systems. Communications access for land mobiles (CALM). Non-IP networking.