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Art. 71 Ordinance of September 5, 1979, on Road Signage (OSR) - Location and Technical Requirements
Art. 71 OSR · Location and Technical Requirements
Traffic lights are installed on the right edge of the road. They can be repeated above the relevant lane, on the left side, or on the opposite side of the intersection.
The lights may be placed: a. on the left side exclusively for the outer left lane, when the road comprises multiple lanes in the same direction; b. exclusively above the roadway if considered appropriate; c. in special cases, for example near rail tracks on dedicated paths running alongside the road, doubled for a single lane to regulate diverse traffic directions; for this purpose, the lane must be at least 4.50 m wide, and the lights must be clearly assigned to the vehicle flows; d. on the opposite side of the intersection if they are intended exclusively for cyclists and moped riders.
The lower height of the edge of the lights is: a. 2.35 m to 3.50 m at the roadside; for lights that concern exclusively pedestrians, cyclists, and moped riders, it may be lower; b. 4.50 m to 5.50 m above the roadway; it may be higher where there are public transport contact lines.
Light signals must prevent the meeting of vehicles coming from different directions, except those turning left with oncoming vehicles and those involving cyclists or moped riders turning right according to Art. 69a, para. 1, with priority recipients. When green arrows give the right of way and there is no flashing yellow light (Art. 68, para. 3), all meeting is also excluded between vehicles turning into another street and pedestrians crossing it, and between vehicles turning left and those coming from the opposite direction.
Vehicles coming from the right are allowed to take the same direction as vehicles going straight only if each of these two groups of vehicles has a dedicated lane after the intersection. Exceptions are bicycles and mopeds coming from the right according to Art. 69a, para. 1.
The sequence of light signal colors is as follows: green – yellow – red – red and simultaneously yellow – green; Arts. 68, para. 7, 69, para. 3, 70, para. 4 and 4bis, are reserved. The red light must not be on at the same time as the green light. The red and yellow lights illuminated at the same time must only turn off when the green light comes on.
Light signal installations can be equipped with additional devices intended for certain road users, such as push buttons for use by pedestrians, cyclists, or moped riders, or acoustic or tactile devices for the blind. Newly installed or replacing pedestrian light signal installations must always be equipped with a tactile device. Temporary installations used during construction do not apply.