The Redwood Transit System is a commuter transit service that operates Monday-Saturday on the Highway 101 corridor between Trinidad and Garberville in Humboldt County, California, and also serves Westhaven, McKinleyville, Arcata, Eureka, Fields Landing, Loleta, Fortuna, and Scotia. The RTS Willow Creek Extension operates between Arcata and Willow Creek during weekday commute hours. Additionally, Redwood Transit System is administered by Humboldt Transit Authority.