The DMS camera is part of an advanced system that significantly improves road safety. It records signs of driver fatigue and distraction — yawning, fatigue, mobile phone use, smoking, an unfastened seatbelt and other behaviour that affects driving quality.
We tested the system on a single commercial vehicle driven by professional drivers. During the test period it recorded 164 situations rated as risky driver behaviour: 43 fatigue warnings, 44 for yawning, 30 for smoking and 47 for mobile phone use. Fatigue warnings accounted for 26.22% of all recorded events.
The time-of-day analysis showed clear patterns: fatigue was most often recorded between 17:00 and 20:00 (21 events), and yawning between 22:00 and 23:00 (8 events), with a second pronounced peak between 06:00 and 08:00 (9 events).
What makes the system useful is that every recorded event triggers a warning to the driver — an audible signal and a message on the display, plus seat vibration where the optional module is fitted. Because distractions are recorded in real time, the warnings are sent to the dispatch centre simultaneously, so a timely response is possible.
The mere presence of such monitoring encourages drivers to stay focused on the road. For the operator this means lower accident risk, and the data also helps in assessing and selecting the drivers who operate the fleet.
Results of a single test period on one commercial vehicle; they illustrate the types of events the system records and do not guarantee the same results under different operating conditions.
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