The reversible lane is open. Are you allowed to cross the left double broken line to overtake?

Why this is the correct answer

In the image you can see square lane-control signals (semáforos de carril) mounted on an overhead gantry. Some show a red X (lane closed to your direction), while one shows a green downward arrow (that reversible lane IS open for you). What is a reversible lane? A reversible lane is a special lane on a road with traffic in both directions. Its direction of travel can change depending on traffic needs (e.g., rush hour). It is identified by double broken lines on BOTH sides and double-headed arrows painted on the road surface. When can you enter it? You may ONLY enter a reversible lane when the overhead square signal above it shows a green downward arrow for your direction. If it shows a red X, the lane is closed to you (it may be serving oncoming traffic). If a diagonal arrow appears, you must leave the lane as soon as possible because it is about to close. Can you drive in the opposite direction? No — you cannot simply decide to drive in the opposite direction. The lane serves whichever direction the overhead signals assign at that moment. Driving against the assigned direction is a very serious offence. Can you overtake in a reversible lane? NO. You must NEVER cross the double broken lines to overtake. Even though the lines are broken (not continuous), they delimit the reversible lane — the lane immediately to your left may carry vehicles coming towards you. Crossing into it would risk a head-on collision. Key rules when using a reversible lane: • Keep your dipped headlights (low beams) ON at all times, day or night. • Obey the speed limit of the road. • No overtaking — do not cross the double broken lines. • Maintain a safe following distance. • Follow all instructions from traffic agents. • It is forbidden to cross into the oncoming lane.