CONVENTION ON ROAD TRAFFIC
The Contracting Parties, desiring to facilitate international road traffic and to increase road safety through the adoption of uniform traffic rules, have agreed upon the following provisions:
Chapter II
RULES OF THE ROAD
ARTICLE 16
Change of direction
1. Before turning right or left for the purpose of entering another road or entering a property bordering on the road, a driver shall, without prejudice to the provisions of Article 7, paragraph 1, and of Article 14, of this Convention:
(a) If he wishes to turn off on the side appropriate to the direction of traffic, keep as close as possible to the edge of the carriageway appropriate to that direction and make as tight a turn as possible;
(b) If he wishes to turn off on the other side, and subject to such other provisions as Contracting Parties or subdivisions thereof may enact for cycles and mopeds, move as close as possible to the centreline of the carriageway if it is a two-way carriageway or to the edge opposite to the side appropriate to the direction of traffic if it is a one-way carriageway and, if he wishes to enter another two-way road, make his turn so as to enter the carriageway of such other road on the side appropriate to the direction of traffic.
2. While changing direction, the driver shall, without prejudice to the provisions of Article 21 of this Convention regarding pedestrians, allow oncoming vehicles on the carriageway he is preparing to leave, and cycles and mopeds moving on cycle tracks crossing the carriageway he is about to enter, to pass.