Wincanton is to install MiX telematics in 1,800 of its vehicles as part of an ongoing safety programme.
The operator has signed a three-year contract with MiX off the back of its WinSafe programme, headed up by Wincanton's group fleet director Carl Hanson.
The contract was signed after a six-month trial of the products.
Hanson said: "Safety in operation is always our top priority, and we believe MiX Telematics' solution will help us derive significant benefits in this respect."
The deal will see MiX's cameras and in-cab driving aid DriveMate installed in the fleet vehicles along with telematics software.
All of the drivers using the MiX products will have access to its mobile app MyMiX, which allows them to see information on their own driving performance and compare their data to their colleagues'.
MiX sales director Richard Adams said: "We are delighted to have been awarded this major contract, which follows an extensive tendering process and a demanding six-month trial.
"We now look forward to working with our colleagues at Wincanton and providing them with the ongoing consultancy services which will ensure the maximum benefit is derived from our partnership and telematics solution."