(Harrisburg, PA) -- Data from around the country indicates Pennsylvania drivers face some of the highest risks of a vehicle collision with deer. A recent report shows the Keystone State led the country in animal-collision insurance claims in last year. Game Commission Executive Director Bryan Burhans says while the peak of the rut still is a few weeks off, deer already have ramped up their activity and are crossing roads more frequently. Burhans says drivers need to be especially cautious at dusk and know that deer travel in groups. Also, he says, if you see one, there's likely more following behind it.