Which statement accurately describes the general rule for traffic control device setup?

• A. Place cones before signs.
• B. Place detour devices before warning signs.
• C. Always work from outside to inside.
• D. Start with advance warning signs and work down to the work site.

Answer: (D)

The main idea is that traffic control devices are arranged in a distance-based sequence from far to near the work zone so drivers receive warning early and are guided smoothly through the area. Starting with advance warning signs gives motorists notice well ahead of the restriction, allowing time to slow, change lanes, or follow a detour as needed. As they approach, tapering and channelization devices guide traffic progressively toward the proper path around the site, and devices closest to the work area alert drivers to the immediate hazard and protect workers. This far-to-near progression reduces speed changes and surprises, improving overall safety. Placing cones before signs would remove that essential advance warning; detour devices before warning signs would send drivers into a detour without adequate notice; and simply saying to work from outside to inside doesn’t capture the necessary ordering from distant warning to near protection.