I ride a 1984 Trek 520 tour bike (basically a utility road bike) April to October. I switch to a mountain bike around this time of year - because I like the fatter tires on the soggy fallen leaf slime or in case of freezing rain. Both bikes have head and tail light mounts, rear racks, and fenders for commuting, and I lash my back pack to the rear rack with a bungee cord. I'll ride till it snows.