A red cross is displayed above your lane in a tidal-flow control section. What must you do?
Use the lane only for overtaking slower traffic.
Continue until a second red cross confirms the closure.
Use the lane at reduced speed if no oncoming traffic is visible.
Leave or avoid the lane because it is closed to your traffic.✓Bonne réponse
Explication
The red cross closes that lane to traffic facing the signal, so you must not continue in it. A white diagonal arrow, not the red cross, tells drivers to change lanes in the direction shown.