Mastering Vehicle Safety: Your Guide to HGV and PCV 'Show Me, Tell Me' Questions
For aspiring HGV (Heavy Goods Vehicle) and PCV (Passenger Carrying Vehicle) drivers in the UK, mastering vehicle safety is not just a legal requirement; it's a fundamental aspect of responsible driving. During your practical driving test, you'll encounter the crucial 'Show Me, Tell Me' questions, designed to assess your knowledge of daily vehicle checks and safety procedures. These questions ensure that you, as a professional driver, can identify potential issues before they become hazards on the road.
At GS Driver Training, based near Dunsfold Aerodrome in Surrey, we understand the importance of thorough preparation. Our expert instructors guide you through every aspect of HGV and PCV training, ensuring you're confident and competent when it comes to vehicle safety. We've been voted Best HGV Training Company for 7 consecutive years, a testament to our commitment to excellence.
Understanding the 'Show Me, Tell Me' Section
- 'Show Me' Questions: For these, you'll need to physically demonstrate how you would perform a specific safety check on the vehicle. This could involve operating controls or visually inspecting components.
- 'Tell Me' Questions: Here, you'll verbally explain how you would carry out a particular safety task or check. This assesses your theoretical understanding of vehicle maintenance and safety protocols.
These questions are typically asked before you even begin the driving portion of your test. If you're taking a test that involves a trailer, such as for a Class 1 (Cat C+E) licence, additional towing-related checks will also be included.
Essential Vehicle Safety Checks for Professional Drivers
1. Securing Doors and Cargo
Q. Show me how you guarantee the security of all doors, especially cargo doors.
A. It's vital to ensure all doors, particularly cargo doors, are securely closed and latched. For cargo doors, verify that the locking levers are in their fully secured position. This prevents accidental opening during transit, which could lead to lost cargo or dangerous road obstructions.
2. Checking for Air Leaks
Q. Show me how to check for air leaks.
A. Air brake systems are critical for HGVs and PCVs. To check for leaks, first ensure the air tanks are fully charged. Then, listen carefully for any hissing sounds around the vehicle, paying close attention to air lines, connections, and brake chambers. You should also monitor the air pressure gauges for any significant drops, which would indicate a leak. A sustained drop in pressure could lead to brake failure.
3. Safe Loading Practices
Q. Tell me the key safety factors for loading the vehicle.
A. Proper loading is paramount for vehicle stability and safety. The load must be distributed evenly across the vehicle's axles to maintain balance and control. Always ensure the load complies with the vehicle's maximum weight and size limitations. Crucially, the load must be securely fastened using appropriate restraints (straps, chains, nets) to prevent any movement or falling during transit, which could cause serious accidents. For more on different vehicle types, consider our HGV Class 2 (Cat C) training or C1 licence training.
4. Inspecting Reflectors
Q. Tell me how to check the reflectors.
A. Reflectors are essential for making your vehicle visible to other road users, especially in low light conditions. Verify that all reflectors are present, clean, and free from any damage such as cracks or breaks. Dirty or damaged reflectors significantly reduce visibility.
5. Windscreen and Window Integrity
Q. Tell me how to inspect the windscreen and windows.
A. Your visibility is paramount. Inspect the windscreen and all windows for any defects, chips, cracks, or obstructions. Ensure they are clean both inside and out. Remove any stickers, mascots, or other items that could impede your view of the road.
6. Mudguards and Spray Suppression
Q. Please demonstrate for me how to inspect the mudguards.
A. During your daily walk-around checks, ensure that all mudguards and spray suppression equipment are securely fitted and undamaged. Effective mudguards prevent water spray from obscuring the vision of other drivers, especially in wet weather, contributing to overall road safety.
7. Tyre Condition and Maintenance
Q. Let me know the method for checking tyre pressure, tread depth and other maintenance?
A. Tyres are your vehicle's only contact with the road. Check tyre pressures when the tyres are cold, using a reliable gauge, and ensure they match the manufacturer's recommendations. For tread depth, the legal minimum for commercial vehicles is 1mm across three-quarters of the breadth of the tread and around the entire circumference. Also, inspect tyres for any cuts, bulges, or embedded objects. Proper tyre maintenance is crucial for safety, fuel efficiency, and preventing blowouts.
8. Windscreen Wipers Functionality
Q. Tell me how to check windscreen wipers.
A. Ensure that the wiper blades are in good condition, free from tears or perishing, and that they operate smoothly across the windscreen, clearing water effectively. Test both speeds and the intermittent setting. Effective wipers are vital for maintaining clear vision in adverse weather.
9. Vehicle Body Condition
Q. Tell me how to inspect the vehicle's body.
A. Conduct a thorough visual inspection of the vehicle's bodywork. Look for any loose panels, sharp edges, or significant damage that could pose a danger to other road users or pedestrians. Also, ensure that all inspection panels are securely fastened.
10. Air Pressure System
Q. Show me how to check the air pressure.
A. Before starting your journey, ensure the air pressure gauges indicate the correct operating pressures for the braking system. Any warning lights or audible alarms related to low air pressure should be off. If they are on, do not proceed until the issue is resolved.
11. Engine Oil Level
Q. Identify where to check the oil level and tell me how to ensure it is sufficient.
A. Locate the engine oil dipstick, usually marked with a brightly coloured handle. With the engine off and cool, remove the dipstick, wipe it clean, reinsert it fully, then remove it again. The oil level should be between the minimum and maximum markers. Top up with the correct type of oil if necessary. Regular oil checks prevent engine damage.
12. Wheel Nut Security
Q. Show me how to check wheel nuts.
A. Visually inspect all wheel nuts for any signs of looseness or damage. If your vehicle is fitted with wheel nut indicators, ensure they are all aligned correctly. Any misalignment could indicate a loose nut, which requires immediate attention to prevent a wheel detachment.
13. Audible Warning Devices
Q. Show me how to operate warning devices like the horn or reversing alarm.
A. Demonstrate the operation of the horn by pressing the steering wheel button. If applicable, explain or demonstrate the functionality of the reversing alarm, ensuring it is audible and working correctly to warn pedestrians and other vehicles when reversing.
14. Suspension System Inspection
Q. Tell me how to inspect the suspension.
A. During your daily walk-around, visually inspect the suspension components for any obvious signs of damage, leaks (from air suspension), or excessive wear. Look for broken springs, damaged shock absorbers, or displaced air bags. A compromised suspension system affects vehicle handling and stability.
15. Brake Lights Functionality
Q. Please demonstrate how to check the brake lights?
A. With the ignition on, press the brake pedal firmly. If you are alone, use reflections from a wall or window to check that all brake lights illuminate brightly. Alternatively, ask a colleague to verify. All brake lights must be working to signal your intentions to following traffic.
16. Engine Coolant Level
Q. Identify the coolant reservoir and tell me how to check levels?
A. Locate the coolant expansion tank, usually a translucent plastic reservoir with 'min' and 'max' markings. Ensure the coolant level is between these markers when the engine is cool. Top up with the correct type of coolant if needed. Proper coolant levels prevent engine overheating.
17. Exterior Lights Check
Q. Tell me how to ensure headlights, sidelights, and tail lights are working?
A. Turn on the vehicle's ignition and activate all exterior lights (sidelights, dipped headlights, main beam, tail lights). Walk around the vehicle to visually confirm that all bulbs are working and are clean. This ensures maximum visibility and compliance with road regulations.
18. Tachograph Operation
Q. Show me how to replace the tachograph disc?
A. For vehicles with analogue tachographs, demonstrate how to correctly insert and remove a tachograph disc, ensuring it is properly dated and aligned. For digital tachographs, explain the process of inserting your driver card and ensuring it is correctly recording your driving and rest periods. Understanding tachograph operation is crucial for compliance with driver's hours regulations.
19. Loading Mechanism Operation (e.g., Tail Lift)
Q. Tell me how to operate specific machinery like a tail lift?
A. Explain or demonstrate the safe and correct operation of any fitted loading mechanisms, such as a tail lift. This includes understanding weight limits, operating controls, and ensuring the area is clear of obstructions and people before use. Safe operation prevents accidents and injuries.
20. Power-Assisted Steering Check
Q. Please demonstrate the power-assisted steering check?
A. With the engine running, apply gentle pressure to the steering wheel while turning it slightly. You should feel the power assistance working. Alternatively, turn the steering wheel just after moving off. Any stiffness or unusual noises could indicate a fault with the power steering system, which needs immediate attention.
21. Direction Indicators Functionality
Q. Please demonstrate how to check the direction indicators?
A. Activate the hazard warning lights or the left and right indicators individually. Walk around the vehicle to confirm that all indicator lights (front, side, and rear) are flashing correctly and at the correct rate. Faulty indicators can lead to miscommunication with other road users.
22. Washer Fluid Level
Q. Identify the washer reservoir and tell me how to check its level?
A. Locate the windscreen washer fluid reservoir, typically a plastic tank under the bonnet. Visually check that the fluid level is adequate. Top up with a suitable screenwash solution, especially in winter, to prevent freezing and ensure effective cleaning.
23. Instrument Panel Checks
Q Show me the checks you'd make on instruments before and after starting the engine?
A. Before starting, ensure all warning lights illuminate briefly and then extinguish (except for those that should remain on, like the handbrake light). After starting, verify that all gauges (speedometer, tachometer, fuel, temperature, air pressure) are reading accurately and that no new warning lights have appeared. This confirms the vehicle's systems are functioning correctly.
24. First Aid Equipment Location
Q. Show me where the first aid kit is stored.
A. If applicable to the vehicle type or journey, demonstrate the location of the first aid kit. Explain any legal requirements regarding its contents and accessibility. Being prepared for minor injuries is part of responsible driving.
25. Windscreen Washers and Wipers Operation
Q. Show me how to use the windscreen washer and wipers?
A. Demonstrate the operation of the windscreen washer jets and wipers using the vehicle's controls. Ensure the jets spray effectively and the wipers clear the screen without smearing. This is crucial for maintaining clear vision in all weather conditions.
26. Demister System Operation
Q. Tell me how to make the demisters work?
A. To clear the windscreen and windows of mist or condensation, explain how to adjust the vehicle's heating and ventilation controls. This typically involves selecting the demist setting, increasing the fan speed, and adjusting the temperature to warm air. Clear windows are essential for safe driving.
27. Rear Fog Lights Operation and Use
Q. Show me how to operate rear fog lights and explain their use?
A. Demonstrate how to switch on the rear fog lights, usually indicated by a specific warning light on the dashboard. Explain that rear fog lights should only be used when visibility is seriously reduced (generally less than 100 metres) to make your vehicle more visible to following traffic, and switched off once visibility improves.
28. Main Beam Headlights Operation
Q. Tell me how to get from the dipped beam to the main beam?
A. Explain or demonstrate how to switch from dipped beam headlights to main beam (full beam), usually by pushing or pulling the indicator stalk. Confirm the main beam indicator light illuminates on the dashboard. Emphasise that main beam should only be used when there is no oncoming traffic and no vehicle directly in front of you, to avoid dazzling other drivers.
Why Vehicle Safety is Crucial for Professional Drivers
Beyond passing your test, a thorough understanding of vehicle safety is integral to your career as a professional driver. HGVs and PCVs are large, complex machines, and any oversight in their maintenance or operation can have severe consequences. Regular checks not only ensure your safety and the safety of other road users but also contribute to the longevity of your vehicle and the efficiency of your operations.
Staying up-to-date with regulations and best practices is also key. For instance, all professional drivers must complete 35 hours of Driver CPC periodic training every 5 years to maintain their qualification. Each 7-hour session typically costs between £150–£200. You can find out more about this on our Driver CPC courses page.
Frequently Asked Questions (FAQs)
Q1: How often should I perform these vehicle safety checks?
A: Professional drivers should perform a comprehensive walk-around check before starting every journey. This daily check is crucial for identifying any immediate issues that could compromise safety or lead to breakdowns. More in-depth maintenance checks should be carried out according to the vehicle manufacturer's schedule.
Q2: What happens if I fail the 'Show Me, Tell Me' section of my HGV test?
A: While you won't automatically fail your entire practical test for making a minor error on a 'Show Me, Tell Me' question, serious safety faults or a complete lack of knowledge could result in a major fault, leading to a test failure. It's best to be thoroughly prepared. Our HGV theory test guide can help with your initial preparation.
Q3: Are the safety questions different for different types of vehicles?
A: Yes, while many core safety principles apply to all large vehicles, the specific 'Show Me, Tell Me' questions will be tailored to the type of vehicle you are testing in. For example, a PCV/bus licence test will have questions specific to passenger safety, while an HGV test will focus on cargo and heavy vehicle mechanics. If you're considering finance options for your training, visit our HGV training finance page.
Q4: Where can I get more information on HGV and PCV training?
A: GS Driver Training offers a wide range of courses for HGV, PCV, CPC, and specialist driver training. You can browse all our courses on our training courses page or contact us directly to speak with one of our advisors. We're here to help you achieve your driving career goals.
Ready to take the next step in your professional driving career? Explore our comprehensive training courses today or get in touch with GS Driver Training to discuss your options. Our team is ready to help you succeed!





