Commercial Vehicle & Truck Assistant

An AI skill for trucks, vans, and commercial vehicles — air brake systems, pre-trip inspections, load securing, weight compliance awareness, and the maintenance realities of vehicles that earn their keep.

Description

Commercial vehicles fail differently and cost differently: downtime is lost revenue, inspections are legally mandated, and systems like air brakes and tachographs have no passenger-car equivalent. This skill covers the daily disciplines (pre-trip inspection, load securing, weight distribution), the commercial-specific systems (air brakes, PTOs, lift gates, trailer connections), and the maintenance planning that keeps a working vehicle working. It spans light commercial vans through heavy trucks, with the caveat that heavy-vehicle work is deeply regulated and jurisdiction-specific.

Audience: Owner-operators, small transport businesses, tradespeople with work vehicles, and drivers who want to understand the machine they operate.

Capabilities

• Air brakes — system layout (compressor, tanks, treadle, chambers, slack adjusters), why air brakes fail differently from hydraulic, daily drain-down and moisture control, low-pressure warnings and spring brake behavior, the concepts behind adjustment checks (measurement and repair belong to certified technicians in most jurisdictions)
• Pre-trip inspection — build systematic walk-around routines by vehicle type, what inspectors look for, documenting defects properly, out-of-service conditions awareness
• Load securing — working load limits and lashing math concepts, chains vs. straps vs. bars, friction and blocking, weight distribution over axles, load shift symptoms while driving
• Weight & dimensions awareness — GVM/GCM concepts, axle load distribution, overhang basics, why overweight matters mechanically (brakes, tires, frames) as well as legally
• Commercial systems — PTO operation and maintenance, lift gates (hydraulic care, battery drain), refrigeration unit basics (pre-cool checks, fuel), trailer couplings and electrical connections, fifth wheels and kingpin wear
• Maintenance economics — inspection-driven maintenance schedules, tire programs (steer/drive/trailer positions, regrooving and retreading concepts), oil analysis as a fleet tool, brake and clutch life on working vehicles
• Diesel drivetrains — links with the Diesel Specialist for DPF/AdBlue in commercial duty cycles, idle-time consequences
• Compliance awareness — driver hours and tachograph/logging concepts, mandated inspection regimes, licensing categories — flagged generically, with the explicit caveat that specifics are jurisdiction-dependent

Example Prompts

Build me a 10-minute pre-trip inspection routine for a 7.5-tonne box
truck with a tail lift, ordered so legal/out-of-service items come first.

Explain how spring (parking) brakes work in an air brake system and why
a low air pressure warning means stop NOW, not at the next exit.

I'm loading 1,200 kg of machinery on a flatbed. Walk me through the
securing math: how many straps of what rating, and where do they go?

My delivery van's rear tires wear out in 25,000 km but the fronts last
60,000. Same axle loads every day. What should I look at?

The truck regens its DPF constantly since we moved to inner-city
delivery routes. Why, and what are my options?

Recommended Workflow

1. Describe the vehicle and its work. Type, GVM class, body/equipment (tail lift, PTO, fridge), typical loads, duty cycle (urban delivery, long haul, site work), and your jurisdiction.
2. State who does the work. Driver-level daily checks vs. workshop maintenance are different scopes — the skill adjusts depth accordingly.
3. For inspections and routines: ask for checklists ordered by legal severity, then adapt them to your vehicle and print them.
4. For load questions: provide actual weights and dimensions — securing and distribution advice is only as good as the numbers.
5. For failures: commercial downtime justifies faster escalation — ask explicitly “repair now vs. schedule vs. park it.”
6. Verify compliance locally. Treat all regulatory guidance as orientation; confirm current rules with your transport authority.

Limitations

• Regulations dominate this domain and vary enormously (weights, hours, inspection regimes, licensing, securing standards). The skill teaches concepts and flags categories — your jurisdiction’s current rules are authoritative.
• Air brake measurement and repair is certified-technician territory in most places, and rightly so — the skill explains the system so you can inspect and communicate, not so you can adjust brakes yourself.
• Heavy-vehicle specifics thin out at the top end. Light and medium commercial guidance is strong; for heavy combinations (B-doubles, road trains) treat the skill as conceptual support alongside professional training.
• Load securing advice is conceptual — certified load restraint guides and standards (with their tables and diagrams) are the working documents.
• No downtime liability. Repair-vs-park decisions on revenue vehicles carry business risk the assistant can inform but not own.

Related Skills

• Diesel Specialist — the engine side of most commercial vehicles
• Fleet Manager — scheduling and cost management across multiple work vehicles
• Tire & Wheel Advisor — commercial tire programs build on its fundamentals