• 31.10 Head unit6
• 31.15 Telephony18
• 31.16 Email/internet/computer/tablet2
• 31.20 Fleet management system/positioning1
• 31.21 Telematics service23
• 31.22 Emergency call system4
• 31.23 Emergency alarm system2
• 31.25 Radiophone/radio data transmission/fax5
• 31.26 Passenger stop request system1
• 31.30 Instrument cluster/onboard computer17
• 31.35 Tachograph/toll system20
• 31.40 Voice control system4
• 31.45 Taxi/rental car/driving instruction vehicle1
• 31.50 Display4
• 31.51 Passenger information display/display box14
• 31.55 Navigation6
• 31.60 Operation/controller/on-board computer9
• 31.65 Radio13
• 31.66 TV4
• 31.67 Media playback/data medium11
• 31.68 Rear Seat Entertainment system4
• 31.75 Audio playback/audio output12
• 31.80 Antenna/antenna amplifier6