Final answer:
If you approach an intersection with blank traffic signals, you should treat it as a four-way stop and proceed with caution.
Step-by-step explanation:
If you approach an intersection that has a set of traffic signals and the signals are blank, you should treat it as a four-way stop. This means that you should come to a complete stop before entering the intersection, and then proceed in the order that vehicles arrived at the intersection. It is important to exercise caution and be aware of other vehicles and pedestrians.