Don['t think about going on this thrill ride-- just go!!! You will be perfectly fine on the road.
It is narrow in places and no guardrails, but you will miss the long horn sheep and the mountain goats if you chicken out! The views are spectacular. Just take it slow and enjoy the ride. This is a don't miss and a high point of our trip to Colorado. Again, you will be perfectly safe.
And be sure to stop for pie at Echo Lodge as your reward on the way back down. Try the coconut cream.... note: this road is only open from Memorial Day to Labor Day- and could close earlier if weather conditions require it. We went up on Labor Day and the weather was gorgeous and not too cold on top. But take a jacket. If you have the senior pass for National Parks, it is accepted at the gates. Drink lots of water to fight altitude sickness.