North Dakota Class D Knowledge Practice Test
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Passing target: 80% (24/30)
On a four-lane divided highway, you see this sign in the right lane ahead: a large lighted panel with an arrow that flashes to the left. What does it tell you?
A approaches orange cones in the right of two same-direction lanes. Beyond the cones, a black panel displays amber lamps in the shape of a left-pointing arrow.
Correct answer: The right lane is closed ahead; merge left when it is safe.
Why
Arrow panels work day and night and can be seen from far away, so merge early instead of at the last moment. A panel with flashing lights and no arrow is in caution mode, which warns of work near the road without a lane closure. Slow down and watch for workers and equipment.
Verified against 2025-2027 Class D Noncommercial Driver License Manual · Flashing arrow panels · p. 17
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