When must a driver perform an en route check of their truck?

Performing an en route check of the truck is essential for ensuring safety and maintaining optimal performance while on the road. The guideline that requires a driver to conduct this type of check after the first 80 km, and then every 240 km or every three hours thereafter, is rooted in best practices for truck maintenance and driver safety.

These checks allow drivers to assess the vehicle’s condition for any issues that may have arisen as the journey progresses. Regular assessments can help identify problems such as tire pressure changes, fluid leaks, or equipment malfunctions before they lead to more significant issues or potential breakdowns. By adhering to this specified schedule, drivers can maintain proactive awareness of their vehicle's status, ensuring it remains safe and functional throughout the trip.

In contrast, the alternatives provided suggest checks based on different criteria, which may not represent the most effective or standard practice for ensuring vehicle safety while operating a tractor-trailer.