A police operation to catch lorry drivers watching DVDs, steering with their knees of reading a book while driving, recorded 230 offences.
Suffolk Police Roads Policing Unit joined colleagues from Norfolk and Essex to patrol dual carriageways in an unmarked lorry.
The operation last week found 125 drivers were not wearing seatbelts, whilst 65 were using a mobile phone.
Officers found defects in 13 lorries and four drivers were found not in proper control of their vehicle.
Fines totalling about £23,000 were handed out.
Acting Sgt Scott Lee-Amies of the Bury St Edmunds Roads Policing Unit said: “Too many motorists are still prepared to risk their own safety, and the safety of their passengers or other road users, by being distracted by continuing to take calls and text messages, eating and reading.”