The ban will be enforced nightly from 3-7 a.m. from Dec. 1, 2015, to April 1, 2016, whether it snows or not. It impacts more than 100 miles of arterial streets throughout the city.
Look for parking signs with a snowflake on a blue background, like these. In addition to the overnight parking ban, drivers should not park in those areas at any time if the snow on the ground is more than 2 inches deep.
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Anyone who does not follow the signs will be ticketed and their cars will be towed.
Here's a map of the streets included in Chicago's winter overnight parking ban.
Here's a list of the overnight parking ban routes.
For more information, call 311 or visit www.cityofchicago.org.