R-1 and R-2 are the most common conditions. A highway will often be closed before an R-3 condition is imposed. Some local areas may use variations of these designations.

R1 and R2 are the most common conditions. The highway is usually closed before an R3 condition is imposed.

Feb 26, 2021 · "So we have three levels of chain control: R1, R2 and R3," said Sgt. Brian Pennings with the California Highway Patrol. "R1 requires you to carry chains with you. However, you don't have to have...

Mar 14, 2025 · When you must put on chains, wait until you can pull completely off the roadway to the right. Do not stop in a traffic lane where you will endanger yourself and block traffic. Chain Info R1: Chains or snow tires required. R2: Chains required on all vehicles except four-wheel drives with snow tires. R3: Chains required on all vehicles. No ...

Jan 24, 2025 · What do the chain control statuses - R1, R2, R3 - mean? R1: Chains are required on all vehicles except passenger vehicles and light-duty trucks under 6,000 pounds gross weight and equipped with snow tires on at least two drive wheels.

Dec 22, 2024 · R2 – Chains or traction devices are required on all vehicles except four-wheel or all-wheel-drive vehicles with snow tires on all four wheels. R3 – Chains or traction devices are required on all vehicles, no exceptions.

Feb 16, 2023 · R1 Chain Control: When chain control is in effect, all vehicles must have chains on their tires, except for those with four-wheel drive and snow tires on all four wheels. R2 Chain Control: When R2 chain control is in effect, all vehicles must have chains on their tires, including those with four-wheel drive and snow tires on all four wheels.

Feb 17, 2019 · When the CHP puts out Chain Control orders, they often include a code like R1, R2, or R3. If you're not used to California's Chain Control laws, you probably don't know what that means, so Department of Transportation has a nice document explaining the laws and definitions.

Notes: R1 = portland-cement concrete R2 = asphalt, aggregate consists of minimum 60% gravel passing 3/8-in. sieve R3 = asphalt, rough texture (typical highway) R4 = asphalt, smooth texture The maximum uniformity ratio is 3:1. Source: AASHTO …

Sep 5, 2021 · I have experience driving to Tahoe in heavy snow events. Most of the time these are R1/R2 events. Anytime that there is an R3 level event on I-80, the highway pretty much just closes. I've driven up in heavy snow and through chain control in 3 different vehicles and tire combinations: 2017 Subaru Crosstrek with Yokohama Geolandar G91F