Iowa Drivers Permit Practice Test

A solid yellow line next to a broken yellow line indicates that passing is allowed only from the side with the broken line. This road marking is designed to inform drivers that while the side with the broken line has the option to pass, the side with the solid yellow line must not attempt to pass. The solid yellow line acts as a restriction for the drivers on that side, creating a clear rule that promotes safety and helps to manage traffic flow. This setup is particularly common on two-lane roads where one direction of traffic is allowed to overtake slower vehicles while the opposite direction must remain safe and undisturbed.