speed limit Illinois Tollway Expects 8MIL Vehicles over Holiday By Associated Press • Jun 29, 2017 The extended Fourth of July weekend is expected to be one of the busiest periods of the year on Illinois's tollway with nearly 8 million vehicles on the system. Higher speed limit for trucks on Illinois highways By Amanda Vinicky • Dec 2, 2014 Trucks will be able to go the same speed as cars on urban interstate highways, now that the General Assembly has nixed a veto by Governor Pat Quinn. Quinn signs higher speed limit bill into law By Amanda Vinicky • Aug 19, 2013 Drivers will be able to legally go five miles an hour faster on most Illinois highways, beginning in January. Governor Pat Quinn has signed a new law increasing the speed limit to 70 miles an hour. IPR’s Amanda Vinicky has more. Listen Listening... / School zones may be put into effect more often By Denise Molina • Apr 22, 2013 Drivers in Illinois would have to slow down near schools a lot more frequently under legislation making its way through the General Assembly.