What must you reckon with when you see these traffic signs?

The traffic sign shown is a warning sign indicating that the roadway will narrow ahead. The additional plate with "50 m" means this narrowing will occur approximately 50 meters from the sign's position. It is important to understand that this sign warns about a change coming soon, not a currently narrow section or one lasting 50 meters.

In German traffic rules, this sign helps drivers prepare for a reduction in road width, which may require adjusting speed or position to safely merge or pass. The "approximately 50 m ahead" aspect is crucial because it gives drivers time to react before the road actually narrows.

So, always pay attention to the distance plate below the warning sign to know when to expect the change. This prevents sudden braking or unsafe maneuvers directly at the sign.