Final answer:
Observing speed limits and the implementation of traffic signals are important considerations in maintaining road safety, and involve understanding the behavior of drivers, law enforcement practices, and situations where overriding traffic laws might be morally permissible.
Step-by-step explanation:
The discussion around obeying speed limits and the implementation of traffic control measures such as traffic signals involves the study of behavior on the roads, which is typically a topic addressed within the scope of Social Studies at the High School level.
There is an evident concern about vehicles consistently speeding through intersections, ignoring posted speed limits. The introduction of a traffic signal is proposed as a solution to make vehicles slow down, emphasizing that the inability to speed through a signal will enhance safety. Moreover, the difference between the 'de jure' (law) and 'de facto' (practice) speed limits is highlighted, signifying the role of law enforcement in maintaining road safety.
Real-life scenarios, such as driving behaviors observed by Peter, and practical considerations for pedestrians crossing roads, further underline the importance of observing speed limits. The unique situation described where rules might be selectively broken for the greater good—such as running a red light to get a pregnant woman to the hospital—demonstrates a moral aspect to traffic laws. Finally, the impact of enforcement and driver behavior in maintaining safe driving speeds is examined, offering insight into the complexities of road safety and transportation etiquette.