Orbit I-70 speed limit in Illinois
Mostly 70 mph: about 80% of I-70 in Illinois is posted at 70. Limits run from 55 to 70 mph along the way. Through cities and towns it is mostly 65 mph.
How much of I-70 is at each limit
Open road
Mostly 70 mph
Through cities and towns
Mostly 65 mph
Questions
What is the speed limit on I-70 in Illinois?
Mostly 70 mph: about 80% of I-70 in Illinois is posted at 70. Limits run from 55 to 70 mph along the way. Through cities and towns it is mostly 65 mph.
What is the highest speed limit on I-70 in Illinois?
70 mph, on 80% of its length in Illinois.
Can the limit be lower than this?
Yes. Work zones, bad weather and local signs can set a lower limit. The posted sign is always the limit.
How does Orbit know the limit?
Orbit uses state and federal road data and OpenStreetMap, and drivers confirm limits from the road. In the app, the limit for the road you are on shows on the map and in CarPlay.
Posted limits as of October 2026, from state and federal road data and © OpenStreetMap contributors, measured by length of road. Work zones, weather and signs can set a lower limit; always follow the posted sign.