Final answer:
A flashing yellow traffic signal at an upcoming intersection indicates caution. Drivers should proceed with care and be prepared to stop if necessary.
Step-by-step explanation:
A flashing yellow traffic signal at an upcoming intersection indicates caution. It is a warning that drivers should proceed with care and be prepared to stop if necessary. This signal is often used in locations where there is a higher risk of accidents, such as intersections with heavy pedestrian traffic or areas with limited visibility.