Final answer:
The maximum speed limit in cities and towns is typically 25 mph unless otherwise posted. This standard ensures pedestrian and driver safety within city limits.
Step-by-step explanation:
The maximum speed limit on streets in cities and towns, unless otherwise posted, is typically 25 miles per hour (25 mph). This is often the standard speed limit for residential areas to ensure the safety of pedestrians and drivers within city limits.
Knowing this, as well as the conversion that 50 kilometers per hour is approximately 31 miles per hour, and that the speed limit on some interstate highways can be around 100 km/h (which is around 62 miles per hour), you can start to get a sense of various speed limits in different driving environments.
It's also worth noting that different areas can have varying enforced speed limits, and it's crucial to always observe local speed regulations.