A __________ indicates that you are not to cross over or pass.

A solid yellow line indicates that you are not to cross over or pass. This is a crucial road marking used to signal to drivers that overtaking another vehicle or making a lane change into the opposing lane is prohibited in that area. The solid line serves as a visual barrier, emphasizing safety and ensuring that drivers remain in their designated lanes. It is particularly important in situations where visibility is limited, such as curves or hills, where crossing over could lead to dangerous collisions.

In contrast, a dashed yellow line allows for passing, indicating that it is safe to do so when there is a clear view of oncoming traffic. A solid white line signifies that lane changes are discouraged but may not be illegal, typically used to separate lanes of traffic moving in the same direction. A dashed white line, on the other hand, indicates that changing lanes is allowed. Understanding these markings is essential for safe driving and adhering to traffic laws.