Here in Colorado the temp fluctuates to wildly to guarantee a frozen base. I fling a bit of dirt & rock with the plow & blower no matter what on my or neighbors drives.
With the temp bouncing all over, stuff often turns to mud (bad) or re-freezes into rutted mud ice (worse). I need more rock on my drive, but have similar issues on neighbors drives with plenty of rock.
We got a foot & a half early this week, up to 4' drifts. My 3,500lbs of tractor plowed pretty much all of it fine now that I have front chains. Was cool plowing uphill watching the snow come over the top of the blade & hearing the engine straining & loosing RPMs in medium range. No more traction issues here. I did have to blow some stuff, but that was mostly windrows I created with the plow that were just to dense to plow further.
I prefer the plow most of the time, but am glad I've got the heavy blower on back for traction & backup when I find something I can't plow.