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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.

Oncoming vehicles in the middle of road.

Another train coming if lights continue.

1. Buses allowed

The supplementary sign buses allowed indicates that buses are permitted to access, enter, or use a road, lane, or area despite a restriction shown on the main traffic sign. Buses (vehicles designed for carrying multiple passengers) are excepted from the main restriction. Applies to public transit buses, school buses, and private coaches, depending on local rules. Does not include minibuses or vans unless specified. May include text: “Buses allowed”, “Except buses”, “Only for buses”.

2. Traffic from both directions

A supplementary sign traffic from both directions is used below a main traffic sign to clarify or emphasize that the traffic flows in both directions on the road ahead or in a specific section. This sign often supplements warning or regulatory signs to ensure clear communication, especially in places where two-way traffic may not be expected.

3. To the left

A supplementary sign to the left is used below a main traffic sign to indicate that the instruction, restriction, or direction applies specifically to the left side or that the relevant feature (e.g., parking, lane, turn) is located to the left.

4. To the right

A supplementary sign to the right is placed below a main traffic sign to indicate that the instruction, restriction, or direction applies specifically to the right side or that the relevant feature (e.g., parking, lane, turn) is located to the right.

5. meter to the left

A supplementary sign ... meters to the left is used below a main traffic sign to indicate that the instruction, restriction, or relevant feature applies at a location to the left at a specified distance ahead. Example: “100 m to the left”.

6. meter to the right

A supplementary sign ... meters to the right is placed below a main traffic sign to indicate that the instruction, restriction, or relevant feature is located to the right at a specified distance ahead. Example: “50 m to the right”.

7. meter ahead

A supplementary sign ... meters ahead is placed below a main traffic sign to indicate that the instruction, restriction, or relevant feature applies or begins a specified distance ahead on the road. Example: “100 m ahead”.

8. For meter

A supplementary sign for ... meters is placed below a main traffic sign to indicate that the regulation, restriction, or condition applies for a specified distance along the road. Example: “For 500 m”.

9. Height

A supplementary sign height is placed below a main traffic sign to specify the maximum allowed vehicle height for passing through a road section, tunnel, bridge, or underpass. Example: “Height limit 3.5 m”.

10. Disc parking

A supplementary sign disc parking is placed below a main traffic sign to indicate that parking is allowed only with the use of a parking disc, which limits parking duration. Drivers must display a parking disc showing their arrival time.

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