Snow and Ice tires for road bike?
There is one thing you can try, if you have disc brakes. It works a lot better than one might think. You can put zip ties around your tire and rim if there is enough clearance. The more zip ties the better the traction. Also the heavier duty zip ties the better. When placing them alternate the heads so that they are on both shoulders of the tire. 

I have ridden on ice and snow several times with this method and have yet to go down. I wouldn't get to crazy on them and it helps to keep a pocket of ties, but this method works and does not break the bank like a $100+ studded tire will. 

If you can lower your tire pressure slightly that will help as well. I have run this method on a 26" MTB tubeless, running 15psi and it never slipped on a parking lot covered in 1" of solid ice, that i had trouble walking on.