What is the maximum speed limit on rural interstates in Illinois?

In Illinois, the maximum speed limit on rural interstates is set at 70 mph. This speed limit is designed to accommodate high-volume traffic while maintaining safety on long stretches of highway that are less populated. The rationale behind this higher speed limit is to optimize traffic flow and efficiency on interstates that often have fewer intersections or stops compared to urban roads.

It's important to remember that speed limits can vary based on specific circumstances, such as construction zones or specific local regulations, but the standard for rural interstates is 70 mph. Drivers should always be attentive to posted signs, as these will indicate the legal speed limits for specific areas and conditions.