HARRISBURG – With deer becoming increasingly active, the PA Game Commission is advising motorists to slow down and stay alert. Deer become more active in autumn with the lead-up to their fall breeding season, commonly referred to as the “rut.” Adult bucks are cruising their home ranges in search of does and might chase the does they encounter. When daylight-saving time ends Nov. 2, there also will be increased vehicular traffic around dusk and dawn – the peak hours for deer activity. All make deer encounters more likely for motorists. Data indicates PA drivers face some of the highest risks of a vehicle collision with a deer or other large animal. A recent report shows PA, once again, led the nation in animal-collision insurance claims in the fiscal year 2024-25.