Delaware Defensive Driving Practice Test

What is the purpose of dashed yellow lines on the road?

1. To separate traffic going in the same direction

2. To indicate a bike lane

3. To separate opposite direction left-turning traffic

4. To mark pedestrian crossings

The correct answer is: To separate opposite direction left-turning traffic

Dashed yellow lines serve a specific function in managing traffic that flows in opposite directions. They are primarily used to indicate areas where drivers are allowed to pass when it is safe to do so. In the context of left-turning traffic, dashed yellow lines delineate the lane for vehicles that are preparing to make a left turn across oncoming traffic. This visual cue helps to promote safe maneuvering by clarifying where passing is permitted and guides drivers as they navigate intersections or prepare to enter another roadway. The presence of dashed lines indicates that caution is essential, especially since oncoming vehicles are present. In contrast, solid lines, bike lane markings, or pedestrian crossing indicators serve different purposes, such as restricting passing or designating specific areas for non-motorized roadway users. Understanding the function of these dashed yellow lines is crucial for safe driving practices, especially in complex traffic scenarios.