Under what condition may you cross a double yellow line to pass another vehicle?

Answer: B — Your side of the road is a broken line

Crossing a double yellow line to pass another vehicle is only permissible under specific conditions, primarily focused on ensuring the safety of both the driver and other road users. The correct answer pertains to the presence of a broken line on your side of the road. This means that if the yellow line closest to you is broken, it indicates that you are allowed to pass, as broken lines signify that it is permissible to cross if safe to do so. In contrast, if your side had a solid yellow line, it would indicate that passing is not allowed; solid lines are meant to discourage overtaking in situations where visibility or road conditions may not support safe maneuvers. Additionally, the condition of the other side of the road being a solid yellow line does not inherently affect your ability to pass when your own side has the appropriate markings. Therefore, the crucial element is the type of line on your own side and ensuring that cross traffic does not pose a danger when making the attempt to pass. Hence, passing when there is oncoming traffic, or if the other side also has a solid line, would generally not be safe or legal.