Stoneridge says the improvement is due to its Duo technology, which provides drivers with real-time information on their current situation, including countdowns on drive and rest times, and warnings when nearing the driving limits.
The tool helps them and their transport managers to optimise their time on the road and adapt to changes in their journey, while staying legal and avoiding fines.
Mark Armstrong, who owns ABH of Mansfield, says: "The tachograph is doing the hard work for the drivers but it also helps them to be much more aware, and we have seen a fantastic reduction in infringements."
Stoneridge is now also offering its Duo Mobile app for smartphones and smartwatches, so drivers have all the drive and rest countdowns right in front of them, along with vibration warnings.
Stoneridge's study involved a sample of data from 108 drivers over 180 days with similar driving times, using any digital tachograph manufactured prior to April 2012 for 90 days, followed by an SE5000 Rev 7.4 or 7.5 for 90 days.