I am certain it is a redbelly snake. It has every trait that a Brown snake does not... three neck spots, two parallel gray margin stripes along the white venter... which is not present in brown snakes. Brown snakes do not live where I am at. They are only found at the bottom of the state and I am an hour and a half from Canada. These ones have a trait where they do not have pigment on their underside except for a little pink or orange here and there... The dead one in the picture was migrating next to another redbelly that was a dark red phase... they got hit and killed with a buffalo blower on the cart path that one of my coworkers was using.