Driver Vehicle Standards Agency
Youre responsible for making sure your vehicle is safe to drive.
Carry out a walkaround check of the vehicle before your journey to make sure its safe. Report any defects in writing to the person in charge of sorting out vehicle defects in your organisation.
The police and Driver and Vehicle Standards Agency (DVSA) officers can stop you to do checks on your vehicles.
You can be stopped from driving until you fix any problems they find, or they can issue you with a fine.
If youre a transport manager or vehicle operator, read guidance about how to make walkaround checks part of your processes for keeping your vehicles safe to drive.
Watch a video showing what checks to do
This short video shows some of the checks that you should do. Read the full list in this guide for more details.
Download the diagram
You can also download a diagram to remind you of the main things to check.
Check inside the vehicle
1. Mirrors and glass
Check that the windscreen is not:
Check that the windscreen and front side windows are not excessively tinted.
Check that all mirrors are in place and not:
- damaged or missing glass
If a camera system is used instead of a mirror, check that it works and the view is correct.
2. Windscreen wipers and washers
Make sure the windscreen wipers work. Check that they are not:
- damaged or worn
Make sure the windscreen washer is working.
3. Front view
Check that no objects get in the way of your front view.
As a general rule, there should be nothing in the swept area of the windscreen wipers.
Some official stickers and road safety items are allowed, as long as they do not seriously block your view of the road, for example, operator licence disc.
4. Dashboard warning lights and gauges
Check that all of these are working correctly:
- warning lights - including the engine warning, emissions system, anti-lock braking system (ABS) and electronic braking system (EBS)
Check that the steering wheel:
- moves properly and that the power-assisted steering works correctly
- has no excessive play
- does not jam
Check that theres no excessive lift or movement in the steering column.
Check that the horn works and is easily accessible from the drivers seat.
7. Brakes and air build-up
- the air builds up correctly and warning system works
- there are no air leaks
- the footwell is clear
- the service brake operates both the tractor and trailer brakes
- the parking brake for the tractor works
- the service brake pedal does not have excessive side play or missing, loose or incomplete anti-slip tread
8. Height marker
Check the correct vehicle height is displayed on the vehicle height marker in the cab.
Remember, the height can change, for example, when the fifth wheel is adjusted, or if the trailer is loaded, unloaded or reloaded.
Check that seatbelts:
- do not have any cuts, damage or fraying that may stop them from working
- stay secure when you plug them in
- retract against you when fitted, and fully retract when you take them off
Check outside the vehicle
10. Lights and indicators
- all lights and indicators work correctly
- all lenses are fitted, clean and the right colour
- stop lamps come on when you apply the service brake and go out when you release it
- marker lights are fitted and work
11. Fuel and oil leaks
Check that the fuel filler cap is fitted correctly.
Turn on the engine and check underneath the vehicle for any fuel or oil leaks.
12. Battery security and conditions
Check that your battery is:
- in good condition
- not leaking
13. Diesel exhaust fluid (AdBlue)
Check that your diesel vehicle has enough AdBlue diesel exhaust fluid and top up if necessary.
14. Excessive engine exhaust smoke
Check that the exhaust does not emit an excessive amount of smoke.
15. Security of body and wings
- all fastening devices work
- cab doors and trailer doors are secure when closed
- body panels on tractor or trailer are secure and not likely to fall off
- landing legs (if fitted) are secure and not likely to fall off while driving
- sideguards and rear under-run guards are fitted if required, and that theyre not insecure or damaged
16. Spray suppression
If spray suppression flaps are required, check that they are:
- not damaged
- not clogged with mud or debris
17. Tyres and wheel fixing
- the tyres and wheels are secure
- the tyres have a tread depth of at least 1mm
- the tyres are inflated correctly
- there are no deep cuts in the tyres sidewall
- there is no cord visible anywhere on the tyre
- all wheel nuts are tight enough - you can check if wheel nut indicators (if fitted) have moved to do this
- there are no objects or debris trapped between the twin wheels
18. Brake lines and trailer parking brake
- couplings are free from debris and are in the right place
- there are no leaks
- there is no damage or wear to the brake lines
- the parking brake for the trailer works
After the initial brake test, leave the engine running so pressure can build up. This will make it easier to hear any leaks as you carry out the rest of the walkaround check.
19. Electrical connections
Check each connection and make sure that all:
- visible wiring is insulated
- visible wiring is not likely to get caught or damaged
- all electrical trailer couplings are connected securely
- all electrical switches work correctly
20. Coupling security
Check that your vehicle is securely attached to your trailer and that the:
- trailer is located correctly in the fifth wheel or coupling
- secondary locking devices are in the correct position
21. Security of load
Check that the load does not move and is not likely to move.
Make sure you use the right type of load securing system for the load.
If youre not happy with how the load is secured or how stable it is, ask the person in charge of vehicle safety to:
- get a competent person to assess it
- reload or resecure it if necessary
22. Number plate
Check that the number plate is not:
- broken or incomplete