Final answer:
When you see a flashing red signal, you must come to a complete stop. When you see a flashing yellow signal, you should proceed with caution.
Step-by-step explanation:
When you see a flashing red signal, it means you must come to a complete stop.
Treat the flashing red signal as a stop sign and proceed only when it is safe to do so.
An example of a flashing red signal is a traffic signal at a railroad crossing.
When you see a flashing yellow signal, it means you should use caution.
Proceed through the intersection with caution, as there may be potential hazards or changes in traffic patterns ahead.
An example of a flashing yellow signal is a signal at a pedestrian crosswalk.