Deer-vehicle crashes occur in all Kansas counties, but in most cases, counties with high human populations and high traffic volumes record the most crashes. Shorter fall days mean that dusk and dawn occur when commuter traffic is heaviest at the same time that deer are more likely to be on the move. Spring also brings an increased number of deer-vehicle collisions.ĭuring rut, deer focus on mating they travel more than in other seasons and pay less attention to hazards such as vehicles. Many move to new locations as crops are harvested and leaves fall from trees and shrubs, so the deer are less secure than in their summer habitats. Deer can be spotted near roadways any time of the year, but motorists should be especially vigilant in the fall. Deer breeding season (rut) peaks in mid-November, and this marks the period when deer-vehicle collisions are most frequent.