When can you cross double yellow lines?

Crossing double yellow lines is primarily permitted when a driver needs to make a left turn, either into a driveway or onto another road. This rule is in place to maintain safety and order on the road. Double yellow lines indicate that passing is not allowed in either direction, as doing so could create dangerous situations, especially on busy or narrow roads. However, the necessity to turn left provides a reasonable exception, allowing drivers to cross these lines when it is safe and necessary to do so.

The other options suggest either a complete allowance to cross at any time regardless of the situation, only in emergencies, or never being allowed to cross, which doesn’t align with driving regulations governing left turns.