Just noticed that link made in post #59 was incorrect on the I-70 report of:
Avoiding I-70 Weekend Traffic: Best and Worst Times to Drive Into the Mountains
Some news web pages now annoyingly are switching to other stories if one stays on a given news sub-page too long. In any case if the report is correct, the real issue is too many people choosing to drive at the same time. Leaving from Denver before 5:30am or returning after 7pm avoids traffic except probably on holiday weekends. At 65 miles between Denver and Silverthorne, that pales against distance and times SF Bay Area skiers take to reach Tahoe. Thus leaving at 7pm one reaches there in 90 minutes or 8:30pm. Minus accidents, should not not be a big deal? Or explain? Likewise on the return same thing, leave after 7pm instead of when lifts close. Go have a dinner.
https://www.westword.com/news/the-best-and-worst-times-to-drive-into-the-mountains-on-i-70-from-denver-8920824
Honestly, most of the time it really is no big deal.