A freelance automotive journalist worries a testing site operated by the Illinois Tollway Authority could be for more than just testing automated tollway technology. Paul Brian said he’s noticed a site with various sensors on northbound I-294 for years with a sign that reads “for testing purposes only.” Illinois Tollway Authority officials said the site is used for testing various sensors, but only for tollway purposes. The site, established in 2015, had an initial price tag of $2.7 million. “The Illinois Tollway has used the test site to study a range of systems – some of which were adopted and...