Beyond Vehicle Checks: Why Driver Roadworthiness Matters

When it comes to fleet safety, most organisations focus heavily on vehicle maintenance – ensuring brakes are functional, tyres are properly inflated, and engines are running smoothly. But what about the person behind the wheel? Research shows that unhealthy drivers are more likely to be involved in collisions and have lower productivity1. This underscores the critical importance of monitoring driver roadworthiness- a term that encompasses both physical and mental fitness to operate a vehicle safely.
In this article, we’ll explore why driver roadworthiness is just as important as vehicle checks and how a fleet management system can help you monitor and improve driver health and performance.

The Safe System Approach

The concept of the Safe System model, widely adopted in road safety strategies, emphasises that no single element-whether its vehicles, infrastructure, or drivers- can ensure safety alone. Instead, all components must work together harmoniously.

Driver roadworthiness is a cornerstone of this approach. While regular vehicle inspections address mechanical risks, ensuring drivers are physically and mentally fit addresses the human factors. According to the Driver Roadworthiness guide from the DfBB, neglecting driver health can lead to catastrophic consequences, including collisions, injuries, and even fatalities.

Fleet operators have a responsibility to prioritise both vehicle and driver readiness. But how do you go about assessing and maintaining driver roadworthiness?

Key Components of Driver Roadworthiness

1. Physical Health:

  • Vision: Poor eyesight can impair a driver's ability to judge distances, read road signs, or spot hazards. Research from the Association of Optometrists (AOP) in 2024 showed that 60% of optometrists have seen patients who continue to drive despite having poor vision, up from 40% five years ago. Regular vision tests are essential.
  • Hearing: Drivers need to hear horns, sirens, and other auditory cues while driving.
  • Fatigue: Tiredness slows reaction times and increases the risk of microsleeps, especially during long hauls. Drives who sleep less than 6 hours per night are at a 33% higher risk of being involved in a crash compared to those who sleep 7-9 hours2.

2. Mental Health

  • Stress, anxiety, and depression can impair concentration and decision-making. A recent study from BMC Psychiatry, suggested drivers with untreated mental illnesses are more likely to be involved in accidents3
  • Driving is also a high-stress occupation. Research shows that male HGV and van drivers are at a significantly higher risk of suicide compared to males in other sectors4.

3. Lifestyle Habits

  • Sleep: Consistent, quality sleep is vital for alertness. Insufficient sleep disrupts appetite regulation, making drivers more likely to choose unhealthy, energy-dense foods.
  • Diet: Poor nutrition can lead to energy crashes and reduced focus.
  • Hydration: dehydration impairs cognitive function, increasing the likelihood of errors. A Mercedes-Benz Vans study found that 70% of at-work drivers felt hydration was a challenge, with 56% of the UK public restricting fluid intake to avoid being ‘caught out without access to toilets’5

By addressing these factors fleet managers can significantly reduce risks and improve overall safety.

Why Driver Roadworthiness Matters

Drivers operating commercial vehicles face unique challenges that can impact their roadworthiness. For example:

  • Fatigue is a major issue: Driver who sleep less hours per night are at higher risk of being involved in a crash.
  • Health conditions matter: Untreated sleep apnea increases the risk of drowsy driving crashes up to 700%6
  • Mental health concerns: Drivers with untreated mental health issues are more likely to be involved in accidents

Employers who fail to assess and manage these risks expose themselves to liability under health and safety laws, with potential fines.

How to Help Your Drivers

Monitoring driver roadworthiness might sound complex, but a fleet management system can make it straightforward. Here’s how:

1. Health Assessments
FleetCheck allows you to schedule and track regular health checks, including vision tests and medical screenings. Automated reminders ensure no assessment is missed.

2. Behavioural Monitoring
Integrate a telematics system with FleetCheck to monitor driver behaviours such as speeding, harsh braking, and erratic lane changes—common signs of fatigue or distraction. Ensure that all incidents, no matter how minor, are thoroughly investigated, as they can also serve as early indicators of declining physical or mental health among staff.

3. Wellness Declaration
Have drivers complete a fit to drive declaration on the FleetCheck Driver App, before they take a vehicle out for their days work.

Alerts and Reporting
If a driver shows signs of fatigue or misses a health check, FleetCheck can send a real-time alert to managers. Comprehensive reports help identify trends and areas for improvement.

By combining technology with proactive policies, FleetCheck empowers fleet operators to create a culture of safety that prioritises both vehicles and drivers.

Driver roadworthiness is not an optional add-on- it’s a fundamental pillar of fleet safety. Just as you wouldn’t send a vehicle out with faulty brakes, you shouldn’t allow a driver who physically or mentally unfit to operate a vehicle. With FleetCheck’s comprehensive tools, you can seamlessly integrate driver health monitoring into your existing fleet management processes. From automated health assessments to real-time behavioural insights, FleetCheck ensures your drivers are as roadworthy as your vehicles.

Keep an eye out for Article 2 of the FleetCheck Driver Roadworthiness series:
Proactive vs Reactive: A Modern Approach to Driver Health Monitoring


[1] Sherry AP, Clemes SA, Chen Y, et al Sleep duration and sleep efficiency in UK long-distance heavy goods vehicle drivers Occupational and Environmental Medicine 2022;79:109-115 [2] Acute Sleep Deprivation and Risk of Motor Vehicle Crash Involvement - AAA Foundation for Traffic Safety [3] Unsworth CA, Baker AM, So MH, Harries P, O’Neill D. A systematic review of evidence for fitness-to-drive among people with the mental health conditions of schizophrenia, stress/anxiety disorder, depression, personality disorder and obsessive compulsive disorder. BMC Psychiatry. 2017;17:318. doi: 10.1186/s12888-017-1481-1 [4] Office of National Statistics Suicide by occupation, England: 2011 to 2015 [5] Wilson, M.M. & Morley, J. (2003). Impaired cognitive function and mental performance in mild dehydration. Eur J Clin Nutr, 57, S24–S29. https://doi.org/10.1038/sj.ejcn.1601898 [6] Driving and Sleep Apnoea - The rules with driving with Sleep Apnoea