Final answer:
The minimum speed on the right lane(s) of an interstate is not universally posted but is generally understood to be around 45 mph. Speed limits vary and should always be adhered to according to local road regulations. Conversions from km/h to mph and m/s are useful for understanding speed limits in different units.
Step-by-step explanation:
The minimum speed limit on interstates can vary by jurisdiction, but there typically isn't a posted minimum speed limit. However, it is generally understood that on U.S. interstates, vehicles should at least maintain a speed of around 45 miles per hour in the right lane unless signs indicate otherwise. Driving below this threshold can be unsafe and may impede the flow of traffic. It's important to note that one should always follow the specific rules and regulations provided by the local Department of Transportation.
Now, when looking at speed conversions mentioned in the reference information, 100 km/h roughly converts to 62 miles per hour using the conversion factor where 1 mile is approximately 1.609 kilometers. And 80 km/h converts to 49.7 miles per hour and 22.2 meters per second.
The ideal banking angle for a highway turn doesn't directly relate to the minimum speed on the right lane(s). However, knowledge of such factors is part of highway design, which ensures that minimum and maximum speed limits can be safely adhered to by drivers.