Final answer:
When facing a solid green light, proceed with caution and be prepared to yield to emergency vehicles and pedestrians. Rule Utilitarianism may suggest exceptions in emergencies for red lights, but this does not apply to green lights.
Step-by-step explanation:
When you proceed straight ahead on a solid green light, the correct action to take is to proceed with caution, observing the intersection for any signs of emergency vehicles or pedestrians. While a green light typically indicates that it is legal to go through the intersection, you must always be aware of your surroundings and be prepared to yield to emergency vehicles like ambulances or pedestrians crossing the street.
Specifically, Rule Utilitarianism (RU), a moral philosophy, might suggest that in specific emergency cases such as when transporting a pregnant woman to the hospital who is about to deliver, it may be morally permissible to go against typical traffic laws, like going through a red light at 4 AM when no other cars are around. However, this does not apply when facing a green light where the law already permits you to go.