Heavy-Duty Fleet Management

Heavy-duty fleet management is the organisation of trucks, tractor units and trailers so they stay compliant, available and profitable. Compared with a van or car fleet, it adds strict driving-time rules, tachograph records, much higher fuel spend, heavier maintenance and the logistics of matching tractors with trailers.

What sets a heavy-duty fleet apart

• Regulation: drivers of heavy goods vehicles are subject to EU rules on driving and rest times, recorded by the digital tachograph and the driver card. Infringements expose both the driver and the company.
• Cost structure: fuel, tyres and repairs weigh far more per vehicle than in a light fleet, so small inefficiencies add up quickly.
• Maintenance: engines, braking systems and trailers need regular inspections, and an unplanned breakdown can immobilise both a vehicle and a load.
• Assets beyond the truck: trailers, refrigerated units and swap bodies must be located, assigned and maintained too.

How a truck fleet is run day to day

The fleet or transport manager plans missions around driver availability and vehicle condition. Each vehicle needs an up-to-date file: registration, insurance, roadworthiness tests, maintenance history and contracts. Telematics adds real-time location, trips, engine hours and driving behaviour, which help dispatch, fuel control and coaching. Maintenance is scheduled on real mileage or engine hours rather than estimates, and every inspection or repair is recorded so the history can be shown to insurers, customers and inspectors.

Key metrics to watch

• Uptime: the share of planned working time each truck is actually available.
• Fuel consumption per distance, compared across vehicles, routes and drivers.
• Cost per kilometre, including fuel, maintenance, tyres, insurance and fines.
• Compliance events: overdue inspections, expiring documents, driving behaviour alerts.

Read more in our article on GPS for heavy goods vehicles and on the heavy vehicle manager role.

How Dadycar helps

Dadycar is a French fleet management software that brings truck records, documents, maintenance and costs into one platform. Reminders and due dates flag inspections and expiring documents, work orders track repairs, and supplier management keeps garages and service partners in one place. Telematics shows positions, trips and driver performance, without a box on compatible connected vehicles and with an optional tracker for the others. Dadycar serves transport and logistics companies, and its data is hosted in France, with OVHcloud.

FAQ

What counts as a heavy-duty vehicle?
In Europe the term usually refers to goods vehicles above the light commercial category, such as rigid trucks and tractor units, which require a specific driving licence.

Does fleet software replace tachograph analysis tools?
Not necessarily. Fleet software centralises vehicles, costs, maintenance and documents; tachograph files are often analysed with dedicated tools. The two are complementary.

Why track trailers separately?
Trailers move between tractors and sites. Knowing where they are and when they are due for maintenance avoids lost assets and idle equipment.