AAA Is Reminding Drivers That This Is The Time Of Year When They Are Most Likely To Strike Deer, Which Can Be Both Dangerous And Now, Significantly More Expensive Than In Years Past. October Through December Marks Deer-Mating Season, So The Animals Are More Active And More Likely To Dart Out Into The Roadway. Deer Strikes Have Jumped More Than 40% Over The Last Five Years With The Average Cost Of Repairs, Over $5,500.