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.

Disabled allowed.

Tractors allowed.

Charging electric vehicles allowed.

Panel valid on left lane.

Panel valid on lane.

... meter ahead.

Stop ... meter ahead.

For ... kilometer.

Crossroad shape.

Crossroad shape.

Illegal parking towing.

Begin.

End.

Ice.

Wet.
A supplementary sign disabled allowed (often with a wheelchair symbol ♿) is used beneath a main traffic sign to indicate an exception or specific permission for persons with disabilities—typically those with a valid disabled parking permit. May include text: “Disabled allowed”, “Except disabled”, Disabled only”
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The supplementary sign tractors allowed indicates that tractors (agricultural or forestry vehicles) are permitted to access, enter, or use a road, path, or area, even if other vehicles are restricted by the main sign. This allows tractors to pass, usually for agricultural, forestry, or maintenance purposes. May include text: “Tractors allowed”, “Except tractors”, “Only for agricultural vehicles”.
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The supplementary sign charging electric vehicles allowed indicates that electric vehicles (EVs) are permitted to park and charge at a designated location, even if parking or stopping is otherwise restricted. Electric vehicles are allowed to stop and use charging facilities in this area, exempting them from general parking restrictions. This sign supports EV users by providing designated charging spots with special access. May display text: “Charging electric vehicles allowed”, “Except electric vehicles while charging”, “Only for charging EVs”.
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A supplementary sign panel valid on left lane is placed below a main traffic sign to indicate that the regulation, restriction, or instruction applies specifically to the left lane of the road.
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A supplementary sign panel valid on lane is placed below a main traffic sign to indicate that the regulation, restriction, or instruction applies specifically to a particular lane on the road.
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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”.
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A supplementary sign stop ... meters ahead is placed below a main traffic sign to warn drivers that a stop is required at a specified distance ahead. Example: “Stop 100 m ahead”.
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A supplementary sign for ... kilometers is placed below a main traffic sign to indicate that the regulation, restriction, or condition applies for a specified distance measured in kilometers along the road. Example: “For 5 km”.
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The supplementary sign crossroad shape is placed below a main traffic sign to indicate the specific shape or layout of an upcoming intersection or crossroad. Shows the configuration of the approaching intersection (e.g., T-junction, staggered junction, crossroads).
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The supplementary sign crossroad shape is placed below a main traffic sign to indicate the specific shape or layout of an upcoming intersection or crossroad. Shows the configuration of the approaching intersection (e.g., T-junction, staggered junction, crossroads).
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