Call signs originate from the original traffic police of TVP. 'T' predominantly stands for 'traffic' and is followed by the letter that identifies the unit.

There are several Roads Policing bases at strategic locations around the force at: Abingdon, Amersham, Aylesbury, Bicester, Chieveley, Milton Keynes, Taplow and Three Mile Cross:      

TV - traffic proactive

     
TA - traffic Aylesbury

TB - traffic Abingdon

TC - traffic Bicester

TM - traffic Amersham

TN - traffic Chieveley

TP - traffic Milton Keynes

TR - traffic Three Mile Cross

TT - traffic Taplow