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Traffic signs

Traffic rules

An additional sign is a traffic sign placed directly below another sign to provide extra information or clarify how the main sign should be understood. It can specify conditions such as distance, time periods, road users affected, directions, or special circumstances. Additional signs do not create new rules by themselves but modify, limit, or explain the meaning of the sign above them so drivers can apply the rule correctly in that specific situation.

Perpendicular parking partially on sidewalk.

1. For disabled people

The supplementary sign for disabled people is a panel placed below a main traffic sign to indicate that the sign's regulation applies specifically to persons with disabilities. It clarifies that the main sign is intended only for disabled people, often those with an official disability permit.

2. For blind people

The supplementary sign for blind people is a traffic sign panel placed under a main sign to indicate that the sign's warning or regulation specifically concerns blind or visually impaired pedestrians. It alerts road users that the situation or rule affects blind people, prompting extra caution or compliance with special accessibility measures.

3. For trucks

The supplementary sign for trucks is a traffic panel placed below a main traffic sign to indicate that the instruction, restriction, or permission applies specifically to trucks. It includes light trucks, heavy goods vehicles (HGVs), articulated lorries, and delivery trucks.

4. For trains

The supplementary sign for trains is a traffic panel placed below a main sign to indicate that the rule, restriction, or warning applies specifically to trains—typically in the context of level crossings, railway rights-of-way, or shared transport corridors.

5. For dangerous cargo

The supplementary sign for dangerous cargo (also called for vehicles carrying hazardous materials) is a traffic panel placed below a main sign to indicate that the rule, restriction, or permission applies specifically to vehicles transporting dangerous goods. Dangerous cargo includes substances that pose risks to health, safety, or the environment. Often classified under ADR (European Agreement concerning the International Carriage of Dangerous Goods by Road).

6. For polluting cargo

The supplementary sign for polluting cargo is a traffic panel placed below a main sign to indicate that the rule, restriction, or permission applies specifically to vehicles carrying environmentally polluting or contaminating substances. Such cargo is often subject to special restrictions, particularly near: Water protection areas, bridges and rivers.

7. For explosive cargo

The supplementary sign for explosive cargo is a traffic panel placed below a main sign to indicate that the rule, restriction, or instruction applies specifically to vehicles transporting explosive materials. Explosive cargo includes materials classified under ADR Class 1, such as: dynamite, TNT, fireworks, ammunition, detonators.

8. Residents allowed

A supplementary sign residents allowed is placed below a main traffic sign to indicate that residents are exempt from the restriction shown above. The restriction (e.g., no entry, no parking, motor vehicles prohibited) does not apply to local residents—typically those living within the restricted area. May include text: “Residents allowed”, “Except residents”, “Residents only”.

9. Trams allowed

The supplementary sign trams allowed indicates that trams are permitted to access, enter, or use a specific road, lane, or area, even if it is generally restricted by the main traffic sign. Trams are excepted from the restriction indicated above. This allows light rail vehicles that run on tracks (typically within city streets) to operate where other vehicles or users may be restricted. May display text: “Trams allowed”, “Except trams”, “Only for trams”.

10. Vehicles with permission allowed

The supplementary sign vehicles with permission allowed indicates that only vehicles that have received explicit authorization or a permit are permitted to access, enter, or use a road, lane, or area, despite general restrictions shown on the main traffic sign. Vehicles holding a valid permit or special permission are excepted from the restriction. The type of permit can vary: resident permits, business or contractor permits, temporary or special event permits. May display text: “Except vehicles with permission”, “Vehicles with permit allowed”, “Access only with authorization”.

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