Panneaux routiers
Above a lane, you see a red 'X' signal. This means:
Afficher la réponse et l'explication
Bonne réponse : B. The lane is closed to you
Reversible lane signals save capacity by reassigning a lane to match peak flow. Green down-arrow = use; red X = do not use; yellow X = clear the lane. Entering a red-X lane invites a head-on collision.
