(b) The dipped-beam may remain switched on at the same time as the main-beams; (c) In the case of lighting units for the dipped-beam being equipped with gas discharge light sources, the gas-discharge light sources shall remain switched on during the main-beam operation.
c) Si les unités d’éclairage produisant le faisceau de croisement sont munies de sources lumineuses à décharge, celles-ci doivent rester allumées en même temps que les feux de route.