The C9 road sign indicates a prohibition for vehicles transporting dangerous goods. You'll often see this sign before tunnels, residential areas, or environmentally sensitive locations where an accident could have severe consequences. Drivers carrying hazardous materials must use designated routes and must not enter the section of road indicated by this sign. This sign is crucial for preventing potential disasters and ensuring public safety.
Learn the key details of the C9 - No Vehicles Carrying Dangerous Goods 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.
This sign prohibits traffic with vehicles that are loaded with dangerous goods. It is used near tunnels, dense urban areas, environmentally sensitive zones, or locations where an incident would have severe consequences. The restriction begins at the sign and applies to the regulated road section, often until the next intersection unless otherwise specified. Drivers transporting dangerous goods must follow designated hazardous-goods routes and comply with all transport documentation and routing rules.
Vehicles carrying dangerous goods are not allowed on this road section.
Get clear, practical answers to the most common questions about the C9 - No Vehicles Carrying Dangerous Goods 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.
The C9 sign, which translates to 'No Vehicles Carrying Dangerous Goods', means that vehicles carrying dangerous goods are not permitted to proceed on the road section starting from the sign. You must not enter this road if your vehicle is loaded with hazardous materials.
'Dangerous goods' refers to substances classified as hazardous under transport regulations, often identified by ADR (European Agreement concerning the International Carriage of Dangerous Goods by Road). Always refer to your load classification and any mandatory routing instructions provided by your employer or transport authority.
If you are transporting dangerous goods and encounter the C9 sign, you must not proceed past it. You should safely stop and find an alternative route that is designated for vehicles carrying hazardous materials. Always follow mandatory routing instructions.
Generally, no. The prohibition applies to all vehicles carrying any load classified as dangerous goods. Even if the prohibition is for a specific tunnel or urban area, your load classification dictates whether you are affected. Always check your transport documentation and any specific signage that might provide exceptions or additional information.
C9 signs are usually placed at the beginning of road sections where the risks associated with carrying dangerous goods are elevated. This commonly includes entrances to tunnels, dense urban areas, environmentally sensitive zones, or near critical infrastructure where a spill or accident could have catastrophic consequences.
Understanding the C9 sign is vital for the theory test. You need to know what it signifies, how to react if you're carrying dangerous goods, and the importance of adhering to designated hazardous-goods routes. Failing to understand this prohibition can lead to incorrect answers on exam questions related to vehicle restrictions and safety.
A clear reference image of the C9 - No Vehicles Carrying Dangerous Goods road sign used in Sweden.

The C9 - No Vehicles Carrying Dangerous Goods road sign may also be known by these alternative names or terms.
The C9 - No Vehicles Carrying Dangerous Goods road sign is part of the Prohibitory Signs (C) category, which groups together signs with similar rules and functions.