Warning for Rockfall
The sign indicates a risk of rockfall and that stones may be present on the road due to rockfall. The symbol is adapted to the conditions at the location.
When You See This Sign
When you see 'Warning: falling rocks' you should immediately reduce speed, increase alertness and prepare to stop or swerve. Keep extra distance to the vehicle in front and follow information on any supplementary plates along the stretch.
Rules & Regulations
- The sign is a warning sign (A12) and indicates a risk of falling rocks or that rocks may be present on the road; it is not a prohibition or mandatory sign.
- As a driver you must adjust your speed and driving behavior to the increased risk and be prepared to stop if obstacles are present on the carriageway.
- Maintain an increased safety margin and distance to the vehicle in front so you can brake or swerve for rockfalls and loose stones.
- Follow any supplementary plates (e.g., indicating a stretch or distance) and comply with additional rules such as speed limit signs or overtaking prohibitions in the area.
Tips for Drivers
- Reduce speed well before you reach the risk-marked section so you have time to detect and assess any stones on the road.
- Scan the road far ahead and the shoulder or adjacent area — small stones can indicate that larger blocks may also have fallen.
- Avoid sudden steering or braking movements on loose stones; brake in a controlled manner before you reach them and steer around obstacles if it is safe.
- Do not park near the base of cliffs or rock faces and, if possible, avoid stopping next to areas prone to rockfall; warn other road users with hazard lights and call the road authority if larger obstacles are present.
Common Mistakes
- Thinking that the sign means you must stop immediately — it warns you, but does not require a stop unless there are obstacles.
- Confusing 'Warning: falling rocks' with 'Warning: loose chippings' — they indicate different hazards and require different driving approaches.
- Assuming the sign only appears in high mountain or coastal areas; it can also be found at road cuttings, tunnel exits and along roads beside rock or earth cuttings.
Test Yourself
Road Sign: Warning for Rockfall
What does this sign warn about?
- A Risk of rockfall and that stones may lie on the road.
- B Risk of stones being thrown up by tires on ordinary gravel roads.
- C Dangerous bend ahead.
- D Tram stop nearby.
Exam Tip
In exam questions they often try to make you believe that the sign implies a mandatory stop or a duty to give way — the correct answer is that it is a warning sign; you must adjust speed and be prepared to stop, but no automatic overtaking bans are imposed without a specific sign.
Did You Know?
Warning sign A12 has a symbol that is adapted to local conditions; the number and shape of the rocks in the image may vary to better reflect the risk at that specific location. The sign is often used at road cuttings, coastal sections and rock faces after road construction where there is a risk of rockfall.
Frequently Asked Questions
Do I always have to stop when I see the sign?
No, the sign warns of a risk but does not automatically require a stop. You should reduce speed, be prepared to stop and act if there are stones or obstacles on the road.
What does a supplementary plate with, for example, '500 m' under the warning sign mean?
The supplementary plate indicates the length of road over which the risk applies. You should be extra vigilant and maintain an appropriate speed for the entire indicated distance.
How does 'Warning: falling rocks' differ from 'Warning: loose chippings'?
'Warning: falling rocks' warns of falling stones and rock blocks on or beside the road, while 'Warning: loose chippings' warns of loose gravel on the carriageway which can reduce grip and cause spray. The driving approach differs: falling rocks requires readiness for obstacles while loose chippings primarily requires more cautious braking and lower speeds.
What do I do if my car is damaged by stones after a rockfall?
Document the location with photos, note the time and, if possible, warn other traffic. Contact your insurance company and report the incident to the road authority or contractor — liability depends on whether there was inadequate maintenance or a sudden event.
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