True or False: Drivers may pass on a two-lane roadway marked with a single solid yellow line on their side of the center line.

On a two-lane roadway marked with a single solid yellow line on a driver's side of the center line, passing is not allowed. The solid yellow line serves as a clear indication that overtaking another vehicle is prohibited in that area. The presence of this line essentially communicates to drivers that it is unsafe to pass due to potential traffic coming from the opposite direction or other hazardous conditions.

In contrast, a dashed yellow line, which is not present in this scenario, would indicate that passing is permitted when safe to do so. Therefore, the solid line's purpose is to ensure safety and prevent collisions, reinforcing the legality of the behavior on the roadway. Accordingly, the answer is true that drivers may not pass in this situation.