What does this sign mean?
En español: ¿Qué significa esta señal?
Why this is the correct answer
Prohibition for lorries whose maximum authorised mass exceeds 3,500 kilograms to overtake motor vehicles travelling on the carriageway, except when those vehicles are two-wheeled motorcycles and provided that the area reserved for oncoming traffic is not invaded, from the place where the sign is situated up to the next "End of no overtaking for lorries" sign or "End of prohibitions" sign.