What do yellow lines separate on a Nevada roadway?
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A.
Exit-only lanes on a freeway
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B.
Lanes of traffic moving in opposite directions Correct
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C.
Two lanes moving in the same direction of travel
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D.
The travel lane from the highway shoulder
The answer is "Lanes of traffic moving in opposite directions"
Yellow lines separate lanes of traffic moving in opposite directions. White markings do the opposite work, sorting lanes that flow the same way. Get that color rule right and most of the marking rules fall into place. Yellow paint has other jobs too (no-passing, the left edge on a divided highway, and center turn lanes), so read the pattern and placement, not just the color.
The traps in the wrong answers
A. Exit-only lanes on a freeway
Exit-only lanes on a freeway are indicated by dotted white lines, not by yellow lines. This answer associates yellow with any special lane because the diamond-shaped warning signs leading up to the exit ramp are yellow.
C. Two lanes moving in the same direction of travel
White lines, not yellow, separate lanes of traffic moving in the same direction. This answer half-remembers the yellow center line as the default lane-marking color and applies it wherever any two lanes touch, without pausing on the direction-of-flow distinction.
D. The travel lane from the highway shoulder
A solid white line marks the boundary between a travel lane and the highway shoulder, not a yellow line. This answer notices the solid yellow stripe used on the left edge of a multi-lane divided highway and generalizes it to every shoulder edge, missing that the right shoulder is marked in white.
This question tests your knowledge of Road Markings in Nevada. Source: Nevada Driver Manual, "Signs, Signals and Markings - Highway Markings," p.32..
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