Final answer:
The last sign to be setup in a construction zone is usually the End Road Work sign.
Step-by-step explanation:
The last sign to be setup in a construction zone is usually the End Road Work sign. This sign is used to indicate the end of the construction zone and alert drivers that they no longer need to slow down or follow any special instructions related to the construction.
Other signs that may be set up before the End Road Work sign include signs for speed limit reduction, lane closures, detours, and warning signs for potential hazards.
It's important for drivers to pay attention to all the signs in a construction zone to ensure their own safety and the safety of construction workers.