When are you NOT allowed to pass another vehicle?

Passing another vehicle is prohibited on a solid yellow line because this line indicates that passing is unsafe due to potential hazards or limited visibility. The solid yellow line serves as a clear visual cue that it is illegal to cross over to the opposite lane to overtake another vehicle. This regulation ensures the safety of all road users, as areas marked with a solid line often have conditions that prevent safe passing, such as curves, hills, or intersections.

In contrast, the other scenarios – passing on a broken yellow line, at a stop sign, or in a school zone – have specific conditions under which passing may or may not be permissible. For example, a broken yellow line signifies that passing is allowed when it is safe to do so. A stop sign indicates a place where all vehicles must come to a complete stop, and while passing may be discouraged or complex, it could depend on other road rules and conditions. In a school zone, there are limitations and specific times when laws may restrict certain movements, but not an outright prohibition against passing like the solid yellow line does.