• 31.10 Head unit3
• 31.15 Telephony82
• 31.20 Fleet management system/positioning4
• 31.22 Emergency call system57
• 31.23 Emergency alarm system20
• 31.25 Radiophone/radio data transmission/fax7
• 31.27 Intercom system1
• 31.30 Instrument cluster/onboard computer100
• 31.35 Tachograph/toll system2
• 31.40 Voice control system14
• 31.45 Taxi/rental car/driving instruction vehicle20
• 31.50 Display10
• 31.55 Navigation68
• 31.65 Radio59
• 31.67 Media playback/data medium34
• 31.75 Audio playback/audio output33
• 31.80 Antenna/antenna amplifier51