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Under Maryland driver regulations, what is the primary meaning of a red background color on a traffic sign?
The answer
Answer: C. According to the Maryland Driver's Manual, a red background color on a traffic sign communicates stop, yield, do not enter, or wrong way. Recognizing sign colors helps drivers instantly understand the type of information presented and respond appropriately before reading the text. Regulatory examples include octagonal stop signs and triangular yield signs that require coming to a halt or yielding right-of-way.
Source: Maryland Driver's Manual (DL-002) — Section 4.B: Colors & Shapes, p. 20