Final answer:
The maximum speed limit on most California highways is 65 mph. Conversion from km/h to mph shows 100 km/h equals approximately 62 mph.
Step-by-step explanation:
The maximum speed limit on most California highways is 65 mph. While some areas may have lower limits, and some rural interstate highways may permit up to 70 mph, the general cap on most highways remains at 65 mph. In order to convert from kilometers per hour to miles per hour, a common conversion is used where 1 mile is approximately 1.609 kilometers. Thus, if the speed limit on some interstate highways is roughly 100 km/h, this can be estimated to about 62 mph, slightly lower than California's max highway speed limit. It's important to be aware of and abide by the speed limit to ensure safety and avoid fines.