The Colorado Department of Transportation is urging caution to drivers as deer and elk migrate to summer habitats across roads and highways. According to CDOT, there were 3,437 wildlife-vehicle collisions reported in Colorado in 2013, down from 4,016 in 2012 and below the 10-year average of 3,605. Of the 3,437 collisions, 3,183involved vehicle damage, 250 involved injuries and four involved fatalities. La Plata County saw 252 collisions in 2013, when the latest numbers were available. Jefferson County came in second with 248, followed by El Paso with 201, Douglas at 199, Garfield with 128, Moffat seeing 116 and Larimer and Montezuma counties with 106 crashes. CDOT officials say there is usually an increase in wildlife accidents during migration seasons in November and May.