Conditions, answered
The questions people actually type when a storm is coming, answered with live data at the top and an explanation that stays true the rest of the year.
- R1, R2, R3 Chain Control Levels Explained for I-80 & US-50
Understanding California chain control requirements on I-80 and US-50. What R-1, R-2, and R-3 mean for your vehicle and tires.
- Donner Pass Chain Controls and I-80 Status
Real-time chain controls for I-80 over Donner Pass. Understand R-1, R-2, and R-3 requirements for the Sierra summit.
- Is I-80 open? Current Donner Pass and Sierra road status
Check if I-80 is open over Donner Pass. Real-time chain control status, elevation data, and webcam links for the Sierra Nevada.
- Kingsbury Grade (SR-207) Road Conditions and Chain Controls
Check live chain controls and road status for Kingsbury Grade (SR-207) between the Carson Valley and Lake Tahoe.
- Mt Rose Highway Conditions Today (SR-431)
Real-time road status for SR-431 Mt Rose Highway. See current chain controls, weather, and live webcams for the pass between Reno and Incline Village.
- Reno to Sacramento Road Conditions: I-80 and US-50
Real-time road conditions for I-80 and US-50 between Reno and Sacramento. Check chain controls, closures, and live webcams before driving.
- Reno to Tahoe Road Conditions: Which Road is Open
Real-time status for I-80, US-50, and SR-431. See chain controls, closure updates, and current weather for the drive from Reno to Lake Tahoe.
- US-50 Echo Summit Chain Controls and Road Conditions
Real-time chain control status for US-50 Echo Summit. Learn how to interpret R-1, R-2, and R-3 requirements and view live cameras.
- Winter Driving Requirements: I-80 and Donner Pass
What to carry for I-80 winter driving, how to interpret R-1, R-2, and R-3 chain controls, and where Caltrans enforces restrictions.