What do solid yellow lines indicate?

Solid yellow lines are primarily used to indicate that traffic is traveling in opposite directions. This means that if you see a solid yellow line on your side of the road, it is warning you against crossing it to pass another vehicle. The yellow color represents caution and alerts drivers to stay on their side of the road.

In Montana, as in many other states, a solid yellow line typically separates lanes of traffic moving in opposite directions, serving as a critical guide to maintain safety on the road. Those driving in the direction of the solid yellow line must adhere to the rule of not crossing into oncoming traffic unless doing so is safe and allowed in specific situations.

While other line types exist, such as dashed lines or other color indicators, the solid yellow line distinctly signals the need for caution regarding lane changes and passing, underscoring its importance in maintaining safe driving practices in the presence of oncoming vehicles.