This sign, code 672, indicates a mandatory minimum speed limit of 30 mph (48 km/h). You must not drive slower than this speed unless conditions such as traffic, weather, or road surface make it unsafe to do so. While this sets a minimum, remember to always drive at a speed appropriate for the specific conditions, which may be lower than the posted limit.
This explanation card covers the 'Minimum speed limit of 30 mph (48 km/h)' sign (Code 672) which is vital for your theory test revision. Understanding its meaning and application is crucial for safe driving and legal compliance in Great Britain.
Speed signs shape both legal compliance and safe driving technique. The number or symbol on the sign must be understood before the vehicle reaches the point where the rule begins, and the driver still has to adapt to weather, traffic, visibility, road surface, and stopping distance. A strong theory response is to slow progressively, keep good spacing, and avoid treating the posted value as a target. It is listed in the catalogue as code 672.
"Minimum speed limit of 30 mph (48 km/h)" controls or explains a speed requirement. It tells the driver when a speed limit, speed zone, minimum speed, reminder, or enforcement-related condition applies.
Get clear, practical answers to the most common questions about the 672 - Minimum speed limit of 30 mph (48 km/h) road sign. Learn how the sign works, what rules it represents, and how it affects real driving situations. This FAQ strengthens your understanding and supports accurate decision making for the British driving theory exam in Great Britain.
The 672 road sign, featuring the number '30' inside a blue circle, signifies a minimum speed limit. You must not drive below 30 mph (48 km/h) unless there is a valid reason, such as adverse weather, heavy traffic, or road conditions making it unsafe to maintain this speed.
No, the sign specifies a minimum speed, not a target speed. You can drive faster than 30 mph if conditions allow and it's safe to do so. However, you must not drive slower than 30 mph unless it's genuinely unsafe to go faster.
A common trap is assuming you *must* drive at exactly 30 mph. Learners sometimes forget that the primary rule is to drive at a speed appropriate for the conditions, and the minimum speed only applies when it's safe. Another mistake is not considering that stationary vehicles or other hazards might necessitate dropping below the minimum speed temporarily.
You are permitted to drive below 30 mph if traffic conditions, poor visibility (like fog or heavy rain), slippery road surfaces, or encountering hazards ahead make it unsafe to maintain the minimum speed. Your safety and the safety of others always take precedence over a minimum speed limit.
Yes, if you are driving below the 30 mph minimum speed limit and conditions allow for a higher speed, you should increase your speed to at least 30 mph. However, if you are already driving at a safe speed for the conditions, and that speed is below 30 mph, you should continue at that safe speed.
A clear reference image of the 672 - Minimum speed limit of 30 mph (48 km/h) road sign used in Great Britain.
The 672 - Minimum speed limit of 30 mph (48 km/h) road sign may also be known by these alternative names or terms.
The 672 - Minimum speed limit of 30 mph (48 km/h) road sign is part of the Great Britain Speed Limit Signs category, which groups together signs with similar rules and functions.
Master Great Britain road signs by comparing related signals; this comparison helps solidify your understanding and reduce errors during your theory test revision. Effective traffic sign comparison is key to improving sign recognition and passing your driving theory exam.
Understand the 20 mph Maximum Speed Limit Road Sign
Obey the Maximum Speed 30 mph Traffic Sign
Maximum Speed 40 mph Means Exactly That – Don't Exceed It!
Maximum Speed 50 mph (80 km/h) Traffic Sign Explained
Maximum Speed 60 MPH (97 km/h) Road Sign Explained
The National Speed Limit Applies Sign (671) Explained
You've reached the end of the 30 mph minimum speed limit.
Prepare for the 20 mph speed limit zone ahead with this essential traffic sign.
After reviewing the full list of road signs, challenge yourself with practice questions focused specifically on sign recognition. Reinforce your learning and ensure you're fully prepared to identify and understand all traffic signs on the DVSA theory test.
Browse All GB Road Signs List