Lane Usage Practice Questions
6 free sample permit questions about lane usage, with the correct answer, a full explanation, and a source reference for each. Want to test yourself instead of just reading the answers? Find your state's free practice test.
1. What does a broken (dashed) white line between lanes traveling the same direction mean?
A broken white line is the standard national marking allowing lane changes, as opposed to a solid line which discourages them.
Source: National: FHWA MUTCD
2. What does a solid white line between lanes generally indicate, such as near an exit or intersection?
A solid white lane line discourages crossing, commonly used just before exits or intersections to keep traffic in its lane.
Source: National: FHWA MUTCD
3. What does the solid white line along the right edge of the roadway (the "fog line") mark?
The fog line marks where the travel lane ends and the shoulder begins, helping drivers stay oriented in poor visibility.
Source: National: FHWA MUTCD
4. What does a yellow line on a roadway generally separate?
Yellow lane markings are the national convention for separating opposing traffic flows, while white lines separate same-direction lanes.
Source: National: FHWA MUTCD
5. What does a diamond symbol painted within a traffic lane typically indicate?
The diamond pavement marking is the standard national symbol for a restricted-use lane, most commonly a carpool/HOV lane.
Source: National: FHWA MUTCD
6. On a two-way road, what is a center lane marked with yellow lines on both sides generally used for?
A two-way left-turn lane lets traffic from both directions merge briefly to complete a left turn, then exit the lane immediately.
Source: National: FHWA MUTCD