This A-12c road sign is a warning sign indicating that the roadway or the left lane is about to narrow significantly, requiring traffic from the left to merge right. You'll often see this sign on multi-lane roads where a lane is ending or during roadworks. Drivers should be prepared for vehicles merging into their lane and adjust their speed and position accordingly to ensure a safe merge.
This warning sign indicates a narrowing of the road on the left, requiring you to merge safely into the right lane. Proper interpretation is crucial for your Polish driving theory test revision and safe navigation in Poland.
The A-12c sign alerts drivers that the left side of the roadway is narrowing. This is often seen on multi-lane roads where the fast lane ends or at roadworks where the left lane is closed. Traffic from the left must merge into the right lane. Drivers on the right should be aware that vehicles will be merging into their space and should be prepared to cooperate.
Warns that the left-hand side of the road or the left lane will end or narrow significantly.
Get clear, practical answers to the most common questions about the A-12c - Road Narrows on the Left 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 Polish driving theory exam in Poland.
The A-12c sign warns that the left side of the road is narrowing and traffic in the left lane must merge to the right. It signifies that the left lane will soon end or become significantly narrower.
When you see the A-12c sign, anticipate that you may need to merge into the right lane. Begin looking for a safe gap in the right lane traffic, signal your intention to merge right, and adjust your speed to smoothly join the flow of traffic.
Drivers in the right lane should be aware that vehicles from the left will be merging into their lane. They should be prepared to adjust their speed or position slightly if necessary to allow merging traffic to enter safely. Avoid sudden braking if possible.
A common exam trap is assuming the left lane continues indefinitely. Drivers must understand that this sign means the left lane will end, requiring a merge. Another mistake is not merging early enough, or trying to overtake on the left just past the sign, which is dangerous and prohibited.
Both A-12b and A-12c signs indicate a narrowing road, but they differ in direction. The A-12b sign means the road narrows on the right, requiring a merge to the left. The A-12c sign, as you see here, means the road narrows on the left, requiring a merge to the right.
A clear reference image of the A-12c - Road Narrows on the Left road sign used in Poland.
The A-12c - Road Narrows on the Left road sign may also be known by these alternative names or terms.
The A-12c - Road Narrows on the Left road sign is part of the Warning Signs (A) category, which groups together signs with similar rules and functions.
Studying signs with similar meanings or visual characteristics, like 'Road Narrows on the Left' and its counterparts, aids in precise traffic sign comparison and strengthens recognition for your theory test revision.
Watch Out for Dangerous Bends to the Right with the A-1 Sign
Beware of Ungated Railway Crossings with the A-10 Sign!
The A-11a Speed Bump sign warns you to significantly reduce your speed.
Prepare for Road Narrows on Both Sides with the A-12a Warning Sign
A-12b: Road Narrows Ahead on the Right – Prepare to Merge Left
After reviewing the full list of Polish road signs, explore specific sign categories for in-depth understanding. Challenge your knowledge with practice questions focused on sign recognition and interpretation to solidify your preparation for the driving theory exam.
Browse All Polish Road Signs
