Final answer:
On urban interstate highways with a speed limit posted as 100 km/h, vehicles may not exceed 62.15 miles per hour when converted using the factor that one mile is approximately 1.609 kilometers.
Step-by-step explanation:
The speed limit on some urban interstate highways is indicated in miles per hour (mi/h) or kilometers per hour (km/h). To convert the speed from km/h to mi/h, you use the conversion factor where 1.0 mile is about 1.609 kilometers. If the speed limit is 100 km/h and you want to convert it to miles per hour, you would perform the following calculation:
100 km/h × (1 mile / 1.609 km) = 62.15 mi/h
So, vehicles may not exceed 62.15 miles per hour or the posted speed limit on urban interstate highways if the speed limit is set to 100 km/h. It's also important to note that driving behaviors, such as speeding slightly over the limit, may not immediately result in a traffic ticket due to speedometer inaccuracies, but it's always best to adhere closely to speed limits for safety and legal compliance.