Solar eclipse 2024 warning: Drivers beware of unusual conditions April 8 in Illinois

Concerns about traffic congestion in Illinois prompted a warning from Illinois Transportation Secretary Omer Osman as thousands of people converge upon the state to view the solar eclipse April 8.

"Illinois is once again proud to lay out the welcome mat for some of the best viewing in the world for the upcoming eclipse, but we need your help if you are making special plans and traveling,” he said in a release. “Traffic will be congested, with more much more activity in areas where people are congregating. Give yourself plenty of extra time and exercise special caution if you’re behind the wheel. We are proud to do our part at IDOT in creating another safe, memorable event.”

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Congestion is expected in the path of totality in southern Illinois and on interstates and major highways leading to and from Chicago, St. Louis and other cities.

Other reminders for drivers from IDOT include:

• Don’t stop cars along roads or bridges.
• Avoid parking on the side of the road or on the entrance and exit ramps to roadside safety rest areas.
• Be cautious. There will be a large number of pedestrians near roads.
• Don’t take photos or wear eclipse glasses while driving.
• Be aware of your surroundings at all times.
• Have a charged cellphone, a full tank of gas and bottled water.
• Plan to arrive early, stay put and leave late to avoid everyone leaving eclipse-viewing sites at the same time.

“The Illinois State Police, working with our local law enforcement partners and other state agencies, is ready to assist the public during this unique phenomenon,” said Illinois State Police Director Brendan Kelly. “We encourage people traveling to the area to plan ahead, be prepared for traffic congestion, and be patient when driving.”

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Even if someone isn't looking to view the eclipse, they may still have to deal with the increased traffic coming from those traveling to see the phenomenon.

"Understand that traffic volumes are going to be higher than the typical Monday," Mike Albano, meteorologist with the National Weather Service, said. "Be mindful of some of the congestion on the roads. Understand that there will be a lot of out-of-staters in the region, so just exercise caution even just going through intersections. People might not be familiar with the road network."

Journal Star staff writer Zach Roth contributed to this report.