Warning sign
Try your brakes sign
What does the Try your brakes sign mean?
Reminds you to test your brakes, usually after a ford or before a steep hill down.
Also known as: Try brakes
What it means
Test your brakes. They may be wet, or you are about to go down a steep hill.
The sign has three lines of words, 'Try your brakes'. It is placed after a ford or before a steep descent.
Wet brakes can be less effective. Test them gently at the first safe opportunity, and if they feel weak, apply light pressure while driving slowly to dry them.
Where you'll see it
After a ford, and before a steep downhill section.
Rules to know
The sign is used after crossing a ford or before descending a steep hill.
Know Your Traffic Signs, p. 12
After driving through deep water your brakes may be less effective. Test them gently, and if they are not fully effective, apply light pressure while driving slowly to help dry them.
The Highway Code, Rule 121
Common mistakes
Mistake: Waiting until you need to stop to find out whether the brakes work.
Instead: Test them gently at the first safe opportunity, with no vehicle close behind you.
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© Crown copyright. Free to reuse under the Open Government Licence v3.0, as long as the sign is reproduced accurately and not in a misleading context.
Related signs
Used with
Ford
Warning sign
The brakes may be wet after a ford.
See also
Steep hill downwards
Warning sign
The brakes work hard on a steep descent.
More warning signs
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- Know Your Traffic Signs (Department for Transport, Sixth edition, 2023), Warning signs, p. 12
- The Highway Code, Rule 121
Sign image: Department for Transport, Traffic sign images (diagram 554.1). © Crown copyright, reused under the Open Government Licence v3.0.
Last reviewed 11 October 2026. This page explains the sign in our own words; for the full rules, see The Highway Code. How we source and check content