When is it legal to pass another vehicle on the right?

Passing another vehicle on the right is legal in California under specific circumstances, and one of those situations is when the vehicle you are passing is making a left turn. This is because the vehicle is signaling its intention to turn left and is moving out of the direct lane of travel, allowing you to navigate around it on the right safely.

In the context of the other options, while passing on a one-way street with multiple lanes is also a legal circumstance for passing on the right, it is not the only situation allowed. Therefore, option A captures a common scenario where this maneuver is explicitly permitted, reinforcing safe driving practices.

In contrast, passing in any situation solely based on signaling or only when traffic is stopped does not align with California traffic laws. These restrictions ensure that drivers don't make unsafe maneuvers that could lead to accidents or traffic violations. Understanding these laws helps ensure safety on the road and adherence to legal driving standards.