Traffic control devices must be visible, give clear direction, and command respect.

• A. True
• B. False
• C. Not sure
• D. Sometimes

Answer: (A)

Clear and effective traffic control devices are designed to be easily seen, clearly convey the required action, and command drivers’ compliance. Visibility is essential so motorists notice the device in time to react, which is achieved through proper size, color contrast, reflective material, illumination, and correct placement in the driver’s line of sight. Giving clear direction means the device communicates a precise instruction using standard signs, symbols, and wording so the action is understood immediately—stop, slow, detour, merge, etc.—without ambiguity. Commanding respect comes from the device’s reliability and proper maintenance: barriers, signs, and lights must be in good condition and positioned so they look official and authoritative, encouraging drivers to follow the instructions. When these elements are in place, safety around bridges and work zones improves because misunderstandings and noncompliance are minimized.