Massachusetts Permit Practice Test

When you encounter a solid yellow line, it is a clear indication that you should not cross or overtake the vehicle in your lane. This marking is used to signify that passing is prohibited, usually because of safety concerns such as limited visibility or road conditions that make it dangerous to overtake. The solid yellow line serves as a warning to drivers to remain in their lane and to adhere to the rules of the road for safety purposes. Observing this rule helps reduce the risk of accidents by discouraging maneuvers that could lead to dangerous situations. In contrast, overtaking a vehicle or crossing the line could lead to severe consequences, including collisions. Though slowing down and proceeding with caution are generally good driving practices, they do not specifically address the directive that comes with a solid yellow line, which is unequivocally to refrain from crossing it.