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New Mexico Class D Written Test Practice
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Passing target: 70% (21/30)
Regulatory, Lane & Parking SignsStandalone practice
A white sign for the left lane shows a black arrow curving to the left and the word ONLY. What does it require of drivers in that lane?

Correct answer: They must turn left at the intersection
Why
Lane-use control signs show where you may go or turn from each lane, often with arrows. They can stand beside the road or hang over the lane, and arrows painted on the pavement may repeat them. Read them early: if you are in a turn-only lane but want to go straight, change lanes only when it is safe, or make the turn and find another way back.
Verified against New Mexico Driver Manual · Lane-use signs · p. 10
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