While driving on the Illinois Tollway, there's a way to check to see if you're I-PASS is working correctly.

After I go through a toll on I-90, sometimes I wonder if my I-PASS actually worked.

Now, I've learned how to figure it out.

Have you ever noticed that there are lights that go off after you pay a toll? If so, have you discovered there are different colors?

Me either, until recently.

Thanks to a post on the Illinois Tollway Twitter account, I have now cracked the code.

Now, you know and knowing is half the battle.


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