As autumn colors sweep across Illinois and days grow shorter, state officials are renewing warnings about increased deer activity on the roads. The Illinois Department of Transportation and Department of Natural Resources have highlighted that deer-vehicle collisions peak during the fall mating season, particularly at dawn and dusk through December. Last year alone, more than 14,000 crashes involved deer, with the majority happening in rural areas and under low-light conditions. Authorities advise drivers to slow down, scan roadsides for the reflection of deer eyes, and avoid swerving if a collision is unavoidable. Remember, safety first, as deer become increasingly active statewide.
“In your travels this fall, please remember that deer can appear suddenly and in some surprising environments,” said Illinois Transportation Secretary Gia Biagi. “If you do see deer, the safest choice is to stay in your lane, brake firmly and avoid swerving in traffic to avoid them.”
Safe driving tips for deer-mating season:
- Deer adapt and thrive in the country, cities, and suburbs. Always assume you’re in an area where deer can be present. Pay special attention to locations with deer crossing signs.
- Scan the sides of the road for eye shine—the reflection of headlights in their eyes.
- Slow down if you see a deer. Anticipate that other deer could be following.
- Prepare for the unexpected. Deer may stop in the middle of the road and not move for oncoming vehicles.
- If a collision is inevitable, don’t veer. Try to glance your vehicle off the deer and avoid swerving into the opposite lanes of traffic or off the road.
“Deer are a common part of the Illinois outdoors and are active during mating season,” said IDNR Director Natalie Phelps Finnie. “Drivers should be aware of their presence and drive cautiously this time of year, especially during dark and low-visibility conditions.”
Last year, over 6,000 such crashes—nearly half the annual total—occurred in October, November, and December, with November posing the highest risk. Most incidents happen after dark or at twilight, especially in rural areas. Cook County leads the state with 550 reported collisions, followed by McHenry, Sangamon, and LaSalle. Rock Island was in 10th place for reported deer collisions. If you hit a deer, authorities urge you to pull over safely, turn on hazard lights, and contact 911. For details on reporting or claiming road-killed deer, visit the Illinois Department of Natural Resources website.