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New Jersey Basic Auto Learner Permit Practice Test
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Passing target: 80% (40/50)
Regulatory, Lane & Parking SignsStandalone practice
A white vertical sign with black letters reads SPEED LIMIT 50. What does the number 50 tell you?

Correct answer: The highest speed allowed on that road when conditions are good
Why
Sign color and shape tell you the type of sign: white vertical rectangles regulate, and yellow signs warn. Where no limit is posted, New Jersey sets limits by type of road, such as 25 mph in business and residential districts and 50 mph on rural roads. The posted number is the most you may drive in good conditions; rain, fog, heavy traffic or people near the road can make a lower speed the safe and legal choice.
Verified against New Jersey Driver Manual · Traffic signs · p. 216, 64, 65
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