Tennessee Highway Patrol Col. Tracy Trott says three people were killed in crashes involving deer in 2012.Col. Trott cautions motorists to be watchful of deer during the fall and winter seasons as an increase in deer-related crashes is likely during the months of October through December.In Tennessee, there were 5,911 deer-related crashes in 2012. That’s an increase of 4.2 percent from the 5,670 crashes involving deer the previous year. Of the 2012 crashes, 5,601 were property damage, 307 were wrecks with injury, and three resulted in fatalities.“The chances of striking deer are considerably higher during hunting and mating season, especially in November.