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Swedish Road Signs and Traffic Sign Meanings

The S4 Sign: Passenger Car with Trailer

S4 - Passenger Car with Trailer Swedish road sign meaning

The S4 road sign, depicting a passenger car towing a trailer, is an important indicator on Swedish roads. It signifies that specific information, such as speed limits or route guidance, applies directly to vehicles configured as a car and trailer combination. When you see this symbol, it's crucial to recognise that standard car rules may not apply, and you must pay close attention to any accompanying instructions to ensure safe towing and compliance with traffic regulations.

About the S4 - Passenger Car with Trailer road sign

Learn the key details of the S4 - Passenger Car with Trailer road sign, including its function, what it communicates to drivers, and how it applies in real traffic situations in Sweden. Use this overview to understand the sign clearly and recognise it confidently during the Swedish driving theory exam.

Definition of S4

The S4 symbol shows a passenger car with a towed trailer. It is used on Swedish direction signs and supplementary plates to indicate that the message concerns car-and-trailer combinations, which may face different speed limits, restrictions, or recommended routes. Trailer combinations can require longer braking distances and wider turning space, so signage may guide them differently. In practice, this symbol helps you quickly identify rules that apply because you are towing.

Meaning of S4

This symbol indicates a passenger car towing a trailer. When shown, the information applies to cars with a connected trailer.

Allowed actions for S4

Following routes or instructions specifically designated for cars towing trailersAdjusting speed and positioning in line with trailer-related rules indicated by the signUsing the symbol to confirm the message targets your vehicle configuration

Prohibited actions for S4

Ignoring a car-and-trailer specific restriction shown with the S4 symbolAssuming car-only guidance applies unchanged when you are towingUsing routes unsuitable for towing when signage provides dedicated trailer guidance

S4 - Passenger Car with Trailer road sign FAQ

Get clear, practical answers to the most common questions about the S4 - Passenger Car with Trailer 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 Swedish driving theory exam in Sweden.

What does the S4 road sign mean?

The S4 road sign visually represents a passenger car that is towing a trailer. Its purpose is to alert drivers that any subsequent information or regulations shown alongside it are specifically intended for car-and-trailer combinations. This helps differentiate rules for towing vehicles from those for regular passenger cars.

When should I pay attention to the S4 sign?

You must pay close attention to the S4 sign whenever you are driving a passenger car that is legally towing a trailer. If the sign appears, any associated speed limits, route recommendations, or restrictions apply directly to your vehicle configuration. Ignoring these specific instructions can lead to unsafe driving conditions or fines.

Does the S4 sign affect my speed limit?

Yes, it can. When the S4 sign is displayed, it often indicates that a different speed limit applies to cars towing trailers than to regular passenger cars. Always check for any accompanying speed limit signs or supplementary plates that provide the specific speed for your towing combination.

Are there any common theory exam traps related to the S4 sign?

A common trap is assuming that general traffic signs apply to your car-and-trailer combination without checking for specific trailer guidance. Learners might also forget that towing affects braking distance and manoeuvrability, so any special instructions indicated by the S4 sign are there for a reason. Always read the sign and any supplementary information carefully in the exam context.

Does the S4 sign apply to heavy trucks towing trailers?

No, the S4 sign specifically refers to passenger cars towing trailers. Heavy trucks and their trailers are typically covered by different signage and regulations, often indicated by signs depicting larger vehicles or specifically mentioning 'heavy vehicle' or 'truck'.

S4 - Passenger Car with Trailer road sign image

A clear reference image of the S4 - Passenger Car with Trailer road sign used in Sweden.

S4 - Passenger Car with Trailer road sign

Other names for the S4 - Passenger Car with Trailer

The S4 - Passenger Car with Trailer road sign may also be known by these alternative names or terms.

Car and trailerPassenger car with trailerTowing a trailerPrivate car towingCar with towed trailer

Symbols (S) road sign category

The S4 - Passenger Car with Trailer road sign is part of the Symbols (S) category, which groups together signs with similar rules and functions.