Rain or Shine, Keep Your Wheels in Line

Australia's roads are crucial to our economy but become increasingly hazardous during wet weather, particularly for heavy vehicle operators. While much focus is placed on passenger vehicle safety, heavy trucks and commercial vehicles face unique challenges in rainy conditions, making awareness and preventative measures crucial for improving road safety.

Heavy vehicle-related accidents have been a growing concern in Australia, and wet weather significantly increases the risks. During the 12 months leading to March 2024, there were 183 fatalities involving heavy trucks, including:

• 98 deaths in crashes with articulated trucks

• 88 deaths in crashes involving heavy rigid trucks

The trend is particularly alarming, with fatalities from heavy truck crashes increasing by 2.3% per year over the last three years. Wet weather compounds these risks, leading to higher accident rates due to reduced visibility, longer stopping distances, and hydroplaning hazards.

Looking ahead, projections suggest that if current trends persist, serious injuries from heavy vehicle accidents could increase by 23% by 2030 compared to 2017 levels. The most notable rises in injuries are anticipated in:

• Articulated trucks: +28% for drivers, +31% for other road users

• Rigid trucks: +24% for drivers, +22% for other road users

• Bus-related crashes: +23% for other road users, +17% for bus drivers

The Dangers of Wet Weather for Heavy Vehicles

Several factors make heavy vehicles particularly susceptible to accidents in wet conditions:

• Reduced Traction: Water on the road reduces tyre grip, making it easier for heavy trucks or hydroplanes to skid, especially when braking.

• Longer Stopping Distances: Wet roads can double or even triple the stopping distance for heavy vehicles, increasing the risk of rear-end collisions.

• Poor Visibility: Heavy rain, mist, and spray from other vehicles reduce driver visibility, making it difficult to react quickly.

• Uneven Road Surfaces and Flooding: Potholes and surface water accumulation can destabilise large trucks, increasing rollover risks.

• Brake System Complications: Water can affect air brake performance, leading to delayed response times or brake failure.

How to Improve Heavy Vehicle Safety in Wet Weather

Addressing these risks requires a combination of policy, technology, and driver education:

• Strict Compliance with Wet Weather Speed Limits: Reducing speed in wet conditions can help counteract longer stopping distances and prevent skidding.

• Advanced Safety Technologies: Innovations such as anti-lock braking systems (ABS), electronic stability control (ESC), and adaptive cruise control can improve handling in wet weather.

• Regular Vehicle Maintenance: Proper wheel alignment and tyre maintenance can significantly improve your vehicle's handling and safety during wet and unpredictable conditions.

• Enhanced Driver Training: Truck drivers should receive specialised training on wet weather handling, braking techniques, and emergency response strategies.

• Improved Infrastructure: Investing in better road drainage, clear signage, and rest areas can help prevent wet weather-related crashes.

  
  

Safety for heavy vehicles is a national priority, and wet weather presents unique challenges that demand heightened caution. With fatal accidents rising, governments, companies, and drivers must collaborate to implement better safety measures. As World Safety and Health at Work Day approaches, we remind everyone of the importance of road safety and vehicle care in rainy conditions.

Stay cautious, stay alert, and drive safely, no matter the rain or shine.