Placer County Transit is the operator of mass transportation in the suburbanized western portion of Placer County, California, excluding the city of Roseville. Six routes are provided, five of which use transit buses and one that uses commuter coaches as it connects Auburn with downtown Sacramento during four peak hour trips. Another route also is designed to connect suburbanites with the Sacramento transit grid, as it travels six days per week from Auburn to the Watt/I-80 light rail station. Three six-day-per-week local routes connect Auburn and North Auburn, Rocklin and Auburn, and Rocklin and Lincoln. The final service offered by PCT is a twice per weekday connection between Auburn and the rural Placer County.
Besides fixed route service, Placer County Transit also operates Dial-a-ride service in local communities.