When should a Road Work Ahead sign be placed?

• A. After the road work has begun.
• B. At the end of the road section.
• C. In advance of any road or street work activity.
• D. Only during daylight hours.

Answer: (C)

Road Work Ahead signs warn drivers that a work zone is coming and give them time to slow down and prepare for changes in traffic conditions. Because motorists need advance notice to react safely, the sign must be placed in advance of any road or street work activity, well before the work zone starts. If you put it after the work begins, or at the end of the road section, drivers don’t have enough warning and safety is compromised. The timing isn’t about daylight hours—it’s about giving drivers a heads-up far enough in advance to adjust speed and merge if needed.