Which statement is not aligned with the described traffic control plan guidelines?

• A. A good plan supports safe movement and protection
• B. Traffic control devices must be visible and give clear direction
• C. It is acceptable to leave devices up overnight to save time
• D. It should protect inspectors

Answer: (C)

Traffic control plans are grounded in keeping traffic moving safely while protecting workers and the public. The devices used must be clearly visible and provide unambiguous directions so drivers can respond correctly. Leaving devices up overnight to save time goes against these goals, because it can rely on outdated conditions and mislead drivers or create hazards when the work zone changes or when new conditions arise. The other statements align with the plan’s aims: a good plan supports safe movement and protection, and traffic control devices must be visible and give clear direction, which together help protect inspectors and everyone on the road.