Rule 133 ↗
If you need to change lane, first use your mirrors and if necessary take a quick sideways glance to make sure you will not force another road user to change course or speed. When it is safe to do so, signal to indicate your intentions to other road users and when clear, move over.
Mastering the Lane Change : Rule 133 Safety Protocol
Last updated:
📜 Highway Code Regulation
🚘 Independent revision guide
🌐 Multi-Language Translation Support
📖 Rule 133 Full Regulations & Explanation
Text shown in the rule image
Mastering the Lane Change : Rule 133 Safety Protocol
Step 2 :
Take a Sideways Glance
If necessary , take a quick glance to the side to check your blind spots and ensure you will not force another road user to change their course or speed .
Step 1 :
Check Your Mirrors
Begin by using your mirrors to assess the traffic behind and beside you to determine if a gap is available .
Step 3 : Signal Your Intentions
Once you have determined it is safe , use your indicators to signal your move to all other road users .
Step 4 : Move Over When Clear
Confirm the path remains clear and then smoothly transition into the new lane .