In Palatine, speed limits vary depending on the road type and the area in which you're driving. Residential areas have a default speed limit of 25 mph unless otherwise posted. Major roads like Illinois Route 53 and Illinois Route 14 have speed limits of 45-50 mph. Limited access highways like Interstate 290 have a maximum speed limit of 65 mph. In school zones, the speed limit is reduced to 20 mph when school is in session. Search rental cars on KAYAK