Art. 52 Ordinance of September 5, 1979, on Road Signage (OSR) - Advanced Direction Indicators

Advanced direction indicators with white inscriptions on a blue background will be placed on main roads and on secondary roads connecting to main roads ("Advanced Direction Indicator on Main Road"; 4.36). Advanced direction indicators with black inscriptions on a white background will be placed on significant secondary roads ("Advanced Direction Indicator on Secondary Road"; 4.37). Destinations accessible by a highway or a semi-highway are indicated on a green field, those accessible mainly by main roads on a blue background or blue field, and those accessible mainly by secondary roads on a white background or white field.

Outside localities, advanced direction indicators will be placed between 150 and 250 meters from the intersection; within localities, between 20 and 100 meters, but no later than at the start of the section used for lane pre-selection.

A single advanced direction indicator may suffice for several intersections located less than 300 meters from each other.

The direction of the road will be represented by lines corresponding to the layout of the roadways after the intersection. Before roundabouts, the "Advanced Direction Indicator for Roundabout" (4.54) signal may be used.

The "Advanced Direction Indicator with Lane Allocation on Main Road" (4.38) or the "Advanced Direction Indicator with Lane Allocation on Secondary Road" (4.39) can be placed at the beginning of a section used for lane pre-selection. Each traffic lane will be indicated by a separate arrow; the first paragraph applies regarding the color and arrangement of the fields.

On the advanced direction indicators, it is possible to announce traffic restrictions valid for one of the indicated sections (e.g., width or weight restrictions) by reproducing the corresponding regulatory signal ("Advanced Direction Indicator Announcing Restrictions"; 4.40).

The silhouette depicted on the "Aircraft" signal (1.28) may be added to the names of localities with a civil aerodrome.

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