Which centerline indicates that you cannot pass a car on either side?

The centerline that indicates you cannot pass a car on either side is the double solid yellow line. This marking is used to separate lanes of traffic moving in opposite directions and serves as a clear warning that passing is prohibited. The presence of double solid yellow lines indicates that visibility may be limited due to curves, hills, or other factors, making overtaking another vehicle unsafe.

In contrast, broken white lines indicate that changing lanes is allowed, as they denote lanes of traffic moving in the same direction. A solid white line also typically implies that lane changes should be discouraged, but it does not strictly prohibit passing. A solid yellow line indicates that passing is not allowed in that lane, but if there is a broken yellow line next to it, passing is permitted from the side with the broken line. Therefore, the double solid yellow lines are the most restrictive and signify no passing can occur on either side of the road.