Arizona Driving Permit Written Practice Test

What do solid white lines on the road indicate?

1. They mark lanes that should not be crossed

2. They indicate a passing zone

3. They show where parking is allowed

4. They designate road construction areas

The correct answer is: They mark lanes that should not be crossed

Solid white lines on the road signify that lane changes across these lines are discouraged or prohibited. They are typically used to indicate that the lanes are meant for specific traffic flows or to prevent unsafe maneuvers. For instance, they can be found between lanes of traffic moving in the same direction, indicating that while the lanes are adjacent, drivers should remain in their respective lanes. Altering your position across a solid white line could create hazards, especially in high-traffic areas or when visibility is limited. The other options describe scenarios associated with road markings or guidelines that differ from the purpose of solid white lines. Passing zones are typically marked with dashed lines to indicate where it's safe to pass. Parking regulations are shown with distinct signage or yellow curb markings, and road construction areas are indicated with cones and signage rather than solid white lines.