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German Road Signs and Traffic Sign Meanings

Prepare for steep descents with the 18% gradient warning sign (108-18).

108-18 - Descent 18% German road sign meaning

The German road sign 108-18, officially 'Gefälle 18%', is a danger warning sign indicating a very steep downhill slope of 18%. This sign alerts drivers to a potential reduction in control and grip, especially for heavier vehicles or in adverse weather. You should recognise this hazard early, adjust your speed, select an appropriate gear, and increase your following distance before reaching the descent.

Interpreting the Descent 18% Sign (108-18)

This sign (108-18) warns of a significant 18% downward gradient, demanding careful speed adjustment and increased attention to maintain control on German roads. Proper road sign meaning interpretation is crucial for your theory test revision, helping you anticipate and navigate steep descents safely.

Definition of 108-18

German road sign 108-18, officially designated "Gefälle 18%", belongs to the danger warning signs group. It warns about a road-layout, clearance, weather, or surface condition that can reduce control, sight distance, grip, or available space before the driver reaches the hazard. You may see it in approaches to hazards, rural roads, urban conflict points, railway crossings, roadworks, and weather-sensitive sections, depending on how the road authority has arranged the location. The practical meaning is not just the symbol itself, but the driving decision it triggers: adjust speed, position, priority, route choice, stopping behaviour, or attention before the situation becomes urgent. For learners, the key skill is anticipating what could go wrong before the hazard is visible. Always combine the sign with road markings, traffic lights, police instructions, and any supplementary plates at the same location.

Meaning of 108-18

German road sign 108-18 means "Descent 18%" and is officially listed as "Gefälle 18%". In practice, it tells drivers to recognise the situation early, adapt before reaching the controlled area, and check whether markings or supplementary plates change how the rule applies.

Allowed actions for 108-18

Reduce speed early enough to keep full control before reaching the hazard.Scan both sides of the road, mirrors, lanes, shoulders, and crossing areas for the risk shown by the sign.Increase following distance and be ready to brake smoothly if another road user reacts suddenly.Choose a lane position that leaves safe clearance from the warned danger while staying within your lane and markings.Continue only when your speed and observation match the hazard, road surface, and available sight distance.

Prohibited actions for 108-18

Do not treat the warning as optional or wait until the hazard is directly in front of you.Do not overtake, accelerate, or follow closely when the sign points to reduced visibility, unstable road surface, crossing traffic, or vulnerable road users.Do not assume the danger is limited to the exact sign location; it may begin shortly after the sign and continue through the affected section.Do not ignore weather, darkness, traffic density, or roadworks conditions that can make the warned hazard more serious.

108-18 - Descent 18% road sign FAQ

Get clear, practical answers to the most common questions about the 108-18 - Descent 18% 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 German driving theory exam in Germany.

What does the German sign 108-18 'Descent 18%' warn about?

Sign 108-18 warns drivers about a steep downhill gradient of 18%. This significant slope can affect vehicle control, braking effectiveness, and speed, especially for trucks and vehicles with trailers. It's crucial to anticipate this hazard and prepare accordingly before entering the downhill section.

How should I react when I see the 'Gefälle 18%' sign?

Upon seeing sign 108-18, you must reduce your speed well before reaching the descent. Select a lower gear to help control your speed using engine braking, which also saves your brakes from overheating. Increase your following distance from the vehicle ahead and be prepared for potential slippery conditions.

What are common mistakes or exam traps related to sign 108-18?

A common trap is to only react when already on the steep slope, which is too late. Another mistake is not downshifting, leading to excessive brake use and potential overheating, especially on long descents. Learners might also forget to increase their following distance, risking a collision if the vehicle ahead brakes suddenly.

Does sign 108-18 apply to all vehicles?

While all drivers should respect the warning of a steep descent, it's particularly critical for heavier vehicles like trucks, buses, and those towing trailers, as their momentum is greater and braking is less effective. However, all drivers should adjust their speed and prepare for reduced control on an 18% gradient.

Can supplementary signs change the meaning of sign 108-18?

Yes, supplementary plates ('Zusatzzeichen') can modify the meaning or application of sign 108-18. For example, a plate might specify the length of the descent, indicate specific conditions like wet surfaces, or show which types of vehicles the warning is most critical for. Always check for such additional signs.

108-18 - Descent 18% road sign image

A clear reference image of the 108-18 - Descent 18% road sign used in Germany.

108-18 - Descent 18% road sign

Other names for the 108-18 - Descent 18%

The 108-18 - Descent 18% road sign may also be known by these alternative names or terms.

German road sign 108-18German traffic sign 108-18StVO sign 108-18Descent 18% signGefälle 18%danger warning signs 108-18

German Danger Warning Signs road sign category

The 108-18 - Descent 18% road sign is part of the German Danger Warning Signs category, which groups together signs with similar rules and functions.

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