Look for groups. Deer travel in groups, so if you see one crossing the road ahead slow down, as there are probably others in the area but out of view.
Never swerve. Instead, slow down and brake. Swerving can cause you to lose control of your vehicle and strike another vehicle or object along the roadway.
Do not rely on devices. There is no conclusive evidence that hood-mounted deer whistles and other such devices work.
Slow down. If a crash with a deer is unavoidable, AAA recommends slowing down and releasing your foot from the brake before impact. This will raise the front end of the car during the crash and increase the likelihood that the animal will go underneath the vehicle instead of through the windshield.