translate English to French: Although numerous factors, such as those described below, can influence the choice of speed, a driver must, in all circumstances, have control of his vehicle, as required by Article 13 of the Vienna Convention on Road Traffic, so as to be able to exercise due and proper care and to be at all times in a position to perform all manoeuvres required of him.
La vitesse requiert une vigilance encore plus accrue la nuit : les feux de croisement n'éclairant qu'à 30 m, dès 70 km/h, l'obstacle qui surgit dans la zone éclairée est inévitable.