APS – Air processing system;
BWS – Body work system;
BCS – Bus chassis system;
EBS – Brake management system;
EEC – Exhaust emission control system;
EMS – Engine management system;
COO – Coordinator;
ICL – Instrument cluster;
TCO – Tachograph system
ATA, WTA, CTS and AUS – Auxiliary heater system, Clock timer system, Radio;
OPC and RET – Gearbox management system;
SMS – Suspension management system;
RTI – Road traffic information;
TPM – Tyre Pressure Monitoring;
LDW – Lane Departure Warning;