Suburban Chicago's Metra rail service is offering free rides for kids and discounted unlimited ride passes. Here are the details.

During the last two weeks of December, all kids will be able to ride Metra for free, according to Up to three children age 11 and under can ride free with a paying adult. This offer runs from December 16 - January 1.

That's not the only year-end off from Metra, $8 unlimited ride weekend pass during the three-day Christmas and New Year's weekends.

And because your kids tend to get rowdy (don't act like they don't), Metra suggests avoiding the designated 'quiet cars' when you're riding with your children during rush hours.

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