Can you turn down the radio volume?
'Abbassare' — 'ab-bas-SA-re'. Double 'b' and double 's'; stress on the third syllable.
Use when the driver has the radio loud and you need to make a phone call, concentrate, or simply prefer a quieter ride.
'Abbassare' means to lower (volume, price, etc.). Its opposite is 'alzare' (to raise). 'Il volume' is the volume. 'Della radio' means 'of the radio'. Very polite phrasing with 'può'.
Può spegnere la radio?
Can you turn off the radio?
More extreme — switches it off entirely.
Ho bisogno di telefonare.
I need to make a phone call.
Gives a reason without directly asking to lower the volume.
Può alzare il volume? Mi piace questa canzone.
Can you turn it up? I like this song.
Opposite request — shows the structure works both ways.
Italian taxi drivers are known to play music loudly, often Italian pop, classical, or talk radio. A polite request is always respected — Italian culture values courtesy highly in service interactions.