Road rules / 🇬🇧 speed
A speed limit shown inside a red circle on a smart motorway gantry is:
✓ ANSWER
Mandatory, and you must not exceed it
Speed limits displayed in a red circle on motorway signals are legally enforceable.
All the options
- ✓Mandatory, and you must not exceed it
- ✗Advisory, so you may exceed it with care
- ✗Only enforced during the hours of darkness
- ✗A minimum speed for that lane
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