From September through December, it’s mating season for deer. According to State Farm, there are about 60,000 deer-vehicle collisions a year in Virginia. Average damage estimate – $3,800. Experts say “Don’t try to swerve and miss the deer, apply your brakes, stay in the lane, and hit the deer.” Most accidents occur when you’re trying to avoid the animal and the deer like to travel in packs. Deer whistles are advised.