Submitted by wbhyde on January 29, 2020
The Friday before MLK Weekend I spend 6 hours getting to Summit County CO from Boulder (usually about a 90 minute trip). On the west side of the Eisenhauer Tunnel on I-70 I found out why. The road down to Silverthorne was about the worst I have ever seen it in about 40 years of driving that route. It seemed to be partially melted slush on top of ice. I had regen braking on standard where I usually keep it and fought all the way down to nearly the bottom of the valley to keep the car going straight. The front end seemed to lose traction regularly and drift in whatever side to side direction the road sloped. I ran into similar conditions the following week. About half way down I got to wondering if the regen braking had anything to do with it so I changed the setting on the regen braking from standard to low and the front end quit drifting out. I'm not sure why this is, but it's good to know. I'm not sure what's changed about CDOTs treatment of that section of road, but I hope they get it figured out soon.