- Sudden movements: Deer can be easily spooked by sudden movements, such as a car quickly approaching them. This can cause them to run in the wrong direction or freeze in place, which can make them more likely to be hit.
- Limited vision: Deer have limited peripheral vision, which means they may not be able to see a car coming from the side. This is especially true at night, when deer are more active and less able to see.
- Misjudgments: Deer may misjudge the speed or distance of a car, which can lead them to step out in front of it. This is especially true for young deer, who may not have as much experience with cars.
- Roadkill: Deer are often attracted to the smell of roadkill, which can lead them to linger in dangerous areas. This can increase their risk of being hit by a car.