Between September 1 and May 31, what traction requirements apply to passenger vehicles on I-70 between Morrison and Dotsero, Colorado?
Any all-season tire is acceptable.
Colorado's I-70 traction law is stricter than generic all-season.
Vehicles must carry traction tires, chains, or an approved alternative traction device (AutoSocks).
Chains are required at all times.
Chains are one option; qualifying snow tires or AutoSocks also satisfy the law.
The law only applies to commercial trucks.
The law applies to all passenger vehicles, not just commercial.
Colorado's Traction Law (Code 15) on I-70 between Morrison (MP 259) and Dotsero (MP 133) requires passenger vehicles to have either: (1) mud/snow-rated tires with a minimum 3/16" tread, (2) chains, or (3) an approved alternative traction device. The law is in effect every year between September 1 and May 31, regardless of current weather.
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