Rectangular guide signs on North Carolina roads may be which colors?
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A.
Red, yellow, or white
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B.
Orange, black, or yellow
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C.
Green, brown, or blue Correct
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D.
Purple, green, or red
The answer is "Green, brown, or blue"
Rectangular guide signs may be green, brown, or blue: green for directions and distances, brown for recreation, and blue for services like a nearby hospital, Highway Patrol station, or telephone. Choice A is the trap for drivers who default to the sign palette they see most on the road (red stop signs, yellow warnings, white speed-limit signs) rather than sorting each color by the sign category the manual assigns it to.
The traps in the wrong answers
A. Red, yellow, or white
Red-and-white and black-and-white mark regulatory signs like yield and speed limit, and yellow marks warning signs; rectangular guide signs are green, brown, or blue. Reaches for the sign palette a driver sees most often (stop-sign red, warning yellow, speed-limit white) instead of sorting each color by the sign category the manual assigns it to.
B. Orange, black, or yellow
Orange with black is the work-zone palette and yellow marks warning signs; none of the three belong to the guide-sign palette of green, brown, and blue. Merges construction and warning colors with guide-sign colors because all three categories appear along the same highway.
D. Purple, green, or red
Green is a genuine guide-sign color, but the correct set is green, brown, and blue together; red is paired with white on regulatory signs like yield and stop, and purple is not assigned to any of the sign categories the manual lists. Anchors on one recognized guide-sign color and assumes the other two entries must be legitimate without checking the full triplet against the manual.
This question tests your knowledge of Road Signs in North Carolina. Source: North Carolina Driver Handbook, "Chapter 5, Signals and Signs, Guide/Informational Signs," p.85..
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