Yes, you can run 60 mph on snow-packed roads, assuming your brain was left at home. No, you can't stop on a dime in such conditions. The need to be able to brake or suddenly change directions to avoid obstacles like cars, elk, or a kid on a sled is vital. Your speed in the snow should always be dictated by road conditions, not your desire to get someplace in a hurry. Black ice occurs when melting ice or snow freezes on dark asphalt, leaving a thin, transparent layer of ice, giving the illusion of a dry surface. It only takes a fraction of a second to lose control. Pay attention.
Most cars and trucks are equipped with lower gears. Your vehicle probably has them. Riding with your foot on the brake while going downhill on a mountain road is a great way to reduce your brakes to stinky smoke and flame. Shift into a lower gear, and touch the brakes only when necessary.
If you find yourself driving in a hard snowfall, put your headlights on low beam. High beams reflect off the snow, making visibility difficult. Use fog lights if you have them. Don't overdrive your lights and be patient: take your time.
A Word About the Natives
Mule deer and elk are a common sight in the mountains and in Red River. When driving down Main Street, High Street or any other Red River roadway, be on the lookout for our four-footed friends. They frequently cross Main Street in the late afternoon or early evening heading toward Deer Lodge and their favorite hangout near Williams Trading Post on Bitter Creek Rd. Also be especially careful along E. High Street and near the "Y" around sunset.
New Mexico highway crews do a great job of keeping the roads passable, but being a smart and attentive driver is still the key to safe traveling in the high country snow.