The Top 10 Items Every Truck Pre-Start Checklist Should Include (2026 Guide)

1. Brakes & Air Systems

Brake failure is a leading cause of heavy vehicle accidents. A visual check isn't enough; drivers must physically test the system.

• Check for: Audible air leaks when the engine is off.
• Test: Build up air pressure and ensure the low-air warning buzzer works.
• Inspect: Brake indicators (if visible) and moisture in air tanks (drain if needed).

2. Tyres & Wheel Security

Tyre defects are the most common roadside compliance breach. Drivers should not just "kick the tyres" but inspect them closely.

• Tread Depth: Meets minimum legal requirements across the tyre surface.
• Condition: Look for deep cuts, bulges, or embedded objects.
• Wheel Nuts: Check for rust streaks (a sign of loose nuts) or missing indicators.

3. Lights & Indicators

To see and be seen. Lighting defects are easy to spot and easy to fix, but often ignored.

• Test: Headlights (high/low), brake lights, indicators, and reversing lights.
• Inspect: Clearance lights and reflectors. Clean lenses if they are muddy.

4. Trailer Couplings (Fifth Wheel/Pin)

For articulated vehicles, the coupling is the single point of failure. A dropped trailer is a catastrophic event.

• Visual Check: Ensure the jaws are locked around the kingpin.
• Physical Test: Perform a "tug test" before moving off to confirm connection.
• Connections: Check air lines (suzi coils) and electrical cables for chafing.

5. Mirrors & Windscreen

Visibility is critical. A cracked windscreen or missing mirror creates a massive blind spot.

• Windscreen: No cracks in the primary vision area.
• Mirrors: Clean, secure, and adjusted for the driver.
• Cameras: If fitted, ensure lenses are clean and monitors are working.

6. Fluid Levels (Engine Bay)

Prevent engine seizures and expensive repairs by checking fluids daily.

• Check: Engine oil, coolant, power steering fluid, and clutch fluid.
• Look for: Puddles under the truck which indicate an active leak.

7. Load Restraint

A shifting load can tip a truck or fall into traffic. This is a primary Chain of Responsibility (CoR) focus.

• Straps/Chains: Ensure tension is correct and webbing is not frayed.
• Gates/Curtains: Must be secured and latched.
• Container Pins: Twist locks must be fully engaged.

8. Wipers & Washers

Often overlooked until it rains. Wipers are a safety-critical item.

• Blades: Check rubber for splits or perishing.
• Washers: Ensure the reservoir is full and jets are not blocked.

9. Body & General Structure

Loose items can become projectiles.

• Cab: No loose bottles or trash under pedals.
• Exterior: Battery covers secure, toolboxes locked, mudguards intact.
• Horn: Test operation (including air horn if fitted).

10. Safety Equipment

If things go wrong, you need the right gear.

• Fire Extinguisher: In date, charged, and accessible.
• Triangles: 3 x reflective triangles for breakdown use.
• PPE: Hi-vis vest, gloves, and safety glasses.

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