Final answer:
The subject is Law, addressing when Rule Utilitarianism (RU) might justify breaking a traffic law to produce a greater utility, such as in emergency situations involving a pregnant woman in need of immediate medical attention.
Step-by-step explanation:
The question touches on the application of Rule Utilitarianism (RU) in a scenario where a driver might consider breaking traffic laws for a morally good outcome. RU suggests that an action conforms to a rule that, if followed consistently, would lead to the greatest utility for the greatest number. In the provided situation, running a red light at 4 AM when a pregnant woman is about to deliver in the car and no other vehicles are present could maximize utility by potentially saving lives, which Rule Utilitarianism could justify as it produces more utility than harm. This aligns with RU's philosophy that rules can be broken if doing so leads to a better outcome for everyone involved.