Trailer
The symbol indicates a trailer
When You See This Sign
When you see the Trailer symbol (S9) together with another road sign you should first read what the main sign says — S9 indicates that the rule applies to trailers. Follow the instructions (park, pay, or observe prohibitions) for trailers according to the main sign and any additional text.
Rules & Regulations
- The S9 symbol indicates that the sign it accompanies refers to trailers and modifies the main sign so that the rule applies to trailers.
- If S9 is placed under a parking sign it means that parking rules (permission, time limits and fees) apply to trailers; if it is under a prohibition sign the prohibition applies to trailers.
- Any additional text or time indication on the same sign must also be followed for trailers — S9 only specifies the target group of the sign, not exceptions or extra rights.
- S9 does not change other legal requirements for trailers (for example registration, lighting or securing the load); such rules apply regardless of the sign.
Tips for Drivers
- Always read the main sign together with S9 — the symbol does not by itself create a new prohibition or permission but modifies the main sign.
- Check for time indications, fees or maximum lengths on the sign when you park a trailer — these may differ from vehicles without trailers.
- If you park a trailer in a space intended for trailers, make sure it is parked entirely within the marked space so that sidewalks and traffic areas are not blocked.
- Be careful not to confuse the trailer symbol with the caravan symbol; they often imply different rules and are represented differently on signs.
Common Mistakes
- Believing that S9 automatically grants a general right to park a trailer regardless of what the main sign says.
- Confusing the trailer symbol with the caravan symbol and assuming incorrect rules for camping vehicles.
- Ignoring supplementary text or time indications on the sign and relying only on the symbol.
Test Yourself
Road Sign: Trailer
What does this sign primarily mean?
- A Trailer
- B Heavy truck
- C Passenger car
- D Bus
Exam Tip
On the theory test you may get an image where S9 is shown under a parking or prohibition sign — always check whether the question concerns trailers specifically. A common tricky option is to ask whether the prohibition applies to both the car and the trailer; if S9 is only shown under the sign the rule applies only to trailers.
Did You Know?
S9 is often used as an additional symbol on parking and prohibition signs near marinas, recycling centers and building supply stores where trailers are often left. The symbol was introduced to clarify how parking and prohibition rules apply to towed vehicles.
Frequently Asked Questions
Does S9 mean I can park my unhitched trailer there?
It depends on which main sign S9 is attached to. If it is a parking sign with S9 it usually means the space is intended for trailers, but always check time limits and fees as well as local regulations.
Is a caravan the same as a trailer according to the signs?
No. A caravan (camper) has a different symbol and may be subject to different rules than a trailer. Learn to distinguish the symbols because they affect how the sign is interpreted.
Do parking fees and time limits apply to trailers when S9 is used?
Yes — if S9 is placed under a parking sign that shows time limits or a fee, it means those conditions also apply to trailers. Always follow the supplementary text on the sign for exact application.
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