Artikel 28

1. Other markings on the carriageway, such as arrows, parallel or oblique stripes, or inscriptions, may be used to repeat the instructions given by signs or to give road-users information which cannot be suitably conveyed by signs. Such markings shall be used, in particular, to show the boundaries of parking zones or strips, to mark bus or trolleybus stops where parking is prohibited, and for pre-selection before intersections. However, if there is an arrow on the carriageway where it is divided into traffic lanes by means of longitudinal markings, drivers shall follow the direction or one of the directions indicated in the lane along which they are travelling.
2. Subject to the provisions of Article 27, paragraph 4 of this Convention which relate to pedestrian crossings, the marking of part of the level of the carriageway by parallel oblique stripes framed by a continuous line, or by broken lines, shall, in the case of areas framed by a continuous line, mean that vehicles must not enter that area, and in the case of areas framed by broken lines, that vehicles shall not enter that area unless it can be seen that it is safe to do so or in order to turn into a joining road on the opposite side of the carriageway.
3. A zigzag line at the side of the carriageway shall mean that parking on that side of the carriageway is prohibited as far as the line extends. Such line possibly together with the word ‘BUS’ or with the letter ‘A’ may be used to indicate a bus or trolleybus stop.