Beginning January first, the maximum speed limit in Illinois will increase to 70 miles an hour, but you might want to hold off on the throttle. While the new 70mph law technically goes into effect at midnight on New Year's Day, it's going to take the Illinois Department of Transportation a little while to get all the new speed limit signs put up. IDOT spokeswoman Paris Earvin says, until then:
"We really encourage motorists to obey the posted speed limits."
She says IDOT will be posting about 900 new signs between Jan. 2 and Jan. 17, but not earlier:
"I've had folks ask me, 'Why not before Jan. 1?' And we cannot legally post 70mph speed-limit signs until the law is effective."
One open question in the law relates to counties around Chicago and St. Louis. They can opt out of the higher speed limit, but IDOT has yet to say whether any of them are doing so.
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