Question

Generally, the maximum speed limit outside an urban district for any vehicle is _____ on any interstate highway as defined in the Illinois Vehicle Code which includes all highways under the jurisdiction of the Illinois State Toll Highway Authority and _____ for all or part of highways that are designated by the Department, have at least 4 lanes of traffic and have a separation between the roadways moving in opposite directions.

Answer 1

To convert 100 km/h to mph, divide by 1.609 to get 62.2 mi/h. To convert 100 km/h to m/s, multiply by 0.2778 to get 27.78 m/s. Similarly, 80 km/h is about 22.2 m/s and 49.7 mi/h.

Step-by-step explanation:

The student's question deals with the conversion of speed limits from kilometers per hour (km/h) to miles per hour (mi/h) and meters per second (m/s). One part of the question presents that the speed limit on some interstate highways is roughly 100 km/h. To convert this to miles per hour, knowing that 1.0 mile is about 1.609 kilometers, you divide 100 km/h by 1.609 to get approximately 62.2 mi/h. Furthermore, to convert kilometers per hour to meters per second, you multiply by the conversion factor that 1 km/h equals to 0.2778 m/s, so 100 km/h is 27.78 m/s.