Post Marking Device
The device marks a post or similar
When You See This Sign
When you see the post-marking device you should understand that it marks a physical post or similar obstacle near the roadway. Adjust your speed and position in the lane so that you pass with plenty of lateral clearance, without assuming that priority rules have changed.
Rules & Regulations
- Sign X10 indicates that there is a post or equivalent device near the roadway and is an informational sign, not a yield or mandatory sign.
- The presence of the sign does not change traffic rules such as right of way or speed — follow the normal rules for the type of road and any posted signs.
- The device marks a permanent or temporary obstacle (e.g. post, stake, or pillar) that should be kept clear of collisions; adjust your path to provide a safe lateral clearance.
- Placement can vary (carriageway, road edge, roundabout island) and the sign's function is to improve the visibility of the post in poor visibility or darkness.
Tips for Drivers
- Slow down slightly and check that you have enough lateral space before passing a marked obstacle, especially on narrow roads or in poor visibility.
- Be aware that the post may mark a lane boundary or a roundabout island — keep a steady course and signal if you need to turn or change lanes.
- Remember that the sign does not grant priority; watch for oncoming traffic and cyclists when maneuvering around the marked obstacle.
- In darkness or snowfall signs and reflectors often serve as a supplement — use high beams cautiously to better spot the post itself.
Common Mistakes
- Believing that the sign implies a duty to yield or another priority rule — it only informs about a physical obstacle.
- Misinterpreting the sign as a no-parking sign or as permission to drive over a sidewalk to avoid the post.
- Underestimating the importance of lateral clearance and attempting to pass too close to the post at high speed.
Test Yourself
Road Sign: Post Marking Device
What applies when you see this device at the roadside?
- A It indicates that there is a post or similar obstacle at the roadside.
- B It shows that the road is closed to all traffic.
- C It indicates that you must drive to the right of a central barrier.
- D It tells you that the speed limit is reduced to 30 km/h.
Exam Tip
On the theory test you are often tested on understanding that X10 only marks an obstacle and does not change yield or priority rules — choose answers that say 'informs about an obstacle' rather than 'mandatory' or 'warning of an intersection'.
Did You Know?
Post-marking devices are often used at roundabouts, traffic islands and narrow road sections and to make fixed obstacles more visible for snow removal and night driving in Sweden.
Frequently Asked Questions
Does the sign mean I must yield to something?
No, the sign itself does not change the duty to yield. It only indicates that there is a post or equivalent obstacle, so you must maneuver safely according to normal traffic rules.
May I drive closer to the sidewalk if I see this sign?
No, you should not use the sidewalk or bicycle lane to pass a marked obstacle. Stay in your lane and adjust your speed so that you pass with a safe lateral clearance.
Can the sign be placed temporarily at roadworks?
Yes, post-marking devices can be both permanent and temporary and are used at temporary obstacles or work zones to make objects more visible.
Does the sign show which side I should pass the post on?
No, the sign only shows that a post exists. Any instructions about which side to pass would come from other signs or road markings, not from X10 itself.
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