Getting here, once

Chain control on Highway 36 and 89, explained

Our winter guide covers snowmobiling, the sled dog race site on our own road and the park in winter. This one is narrower: what R1, R2 and R3 actually mean on the two highways that reach us, and what happens if you show up without chains.

The three requirement levels below are quoted from the California Highway Patrol’s own description, read 24 September 2026.

R1: chains required unless snow tires
R2: chains required unless 4WD and snow tires
R3: chains required on every vehicle
Caltrans does not post R1, R2 or R3 on signs

The short version

R1, R2 and R3 are Caltrans and CHP shorthand, not something posted on the highway signs themselves. The signs say chains are required. Officers and dispatch use the levels internally.
R1: carry chains, but you do not need them on if your vehicle has snow tires on at least two drive wheels.
R2: carry chains, but you do not need them on if you have four wheel or all wheel drive with snow tires on all four.
R3: chains on every vehicle, no exceptions, two wheel drive or four, snow tires or not.
Driving through without chains when a level applies is a citable offense, and a highway is often closed outright before it reaches R3.

The three levels, as the CHP explains them

A CHP sergeant walked a Fresno television station through the three levels. On R1, his summary was that you must carry chains, but you do not have to have them fitted so long as your vehicle carries snow tires on at least two drive wheels. On R2, you still must carry chains, but you can leave them off if you have both snow tires and four wheel drive. On R3 there is no exception at all: every vehicle needs chains fitted, two wheel drive or four, snow tires or none.

R1 and R2 are the common conditions. A road is frequently closed outright rather than pushed to R3.

The legal basis, and what a citation costs

Caltrans states plainly that a driver must follow the posted chain control signs and any instruction from Caltrans or CHP personnel at a checkpoint, even where that differs from a broadcast road report. You can be cited and fined by the California Highway Patrol for driving past a posted chain requirement without chains. Chain requirements themselves sit in the California Vehicle Code, sections 605 and 27450 through 27503.

Textile snow socks and other alternative traction devices are generally legal where chains are required, provided the officers on site judge the conditions allow it. Caltrans and CHP can still turn away any vehicle whose traction device they judge inadequate. If you are in a rental, check with the rental company first: some prohibit chains on their vehicles entirely.

On our two highways

Highway 36 and Highway 89 meet at our corner, and both are maintained through winter, which does not mean both stay chain free. Our full winter guide covers the basics of driving here in snow. What we would add here: check Caltrans QuickMap before you leave, not the night before. Conditions on a mountain highway change between the evening forecast and the morning you actually drive, and QuickMap carries the live chain control status, not a forecast of it.

We do not publish our own road report and we are not going to tell you a road is clear. Caltrans is the source, every time.

What to actually carry

A set of chains sized to your actual tires, not a set borrowed from another car. Try them on in your driveway before the trip, not at a checkpoint in the dark.
Gloves and a mat to kneel on. Fitting chains in slush is a cold, wet job under the best conditions.
A charged phone with QuickMap loaded, since cell coverage on these roads is thin in stretches.
Time. A checkpoint stop and a roadside chain fitting both eat into a drive that already crosses a mountain summit.

Where you sleep

At the junction of Highway 36 and Highway 89, three miles west of Chester, open every month of the year.

Motel rooms From $125+ a night plus county tax.

The house From $225+ a night plus county tax.

RV sites From $60+ a night plus county tax.

No booking fee, no resort fee, no cleaning fee. Plumas County adds 9% occupancy tax and a 3% tourism district assessment. First bookable night is 30 September 2026.

Check availability

Sources, and when we checked them

California Highway Patrol, Sgt. Brian Pennings, quoted on R1, R2 and R3 chain control levels. ABC30 Fresno. Read 24 September 2026.
California Department of Transportation, chain requirements. The legal basis in the California Vehicle Code, and the citation and enforcement statement. dot.ca.gov. Read 24 September 2026.
Caltrans QuickMap, live chain control and road conditions. quickmap.dot.ca.gov. We link it, we do not mirror it.

Last checked 24 September 2026. Chain control is set hour by hour, not in advance. Nothing on this page is a live road status. Check Caltrans QuickMap the morning you drive.