Final answer:
The speed limits are typically 15 mph, 25 mph, 35 mph, and 55-70 mph in school zones, city streets, county roads, and freeways respectively.
Step-by-step explanation:
Speed limits are meticulously set based on road types to prioritize safety and traffic flow. School zones impose a cautious 15 mph limit, prioritizing the protection of children navigating these areas. City streets maintain a moderate 25 mph limit, balancing urban movement and safety. County roads, characterized by reduced traffic and lower density, permit a slightly swifter 35 mph, accommodating smoother travel. Meanwhile, freeways or interstates, designed for swift transit over longer distances, endorse higher limits ranging from 55 mph to 70 mph across states, emphasizing efficiency.