When approaching a work zone with a “45 mph where workers present” sign, drivers should:

In a work zone with an advisory speed for when workers are present, drivers are required to slow down for the safety of workers but are allowed to drive at the usual speed limit when workers are absent. In such a zone, you should watch for workers and slow down if you see them.

• Slow down immediately.
• Drive at a safe speed for conditions, watch for construction workers, and slow down to 45 mph or lower where workers are present.
• Merge to the right lane.
• All of the above.