WestCAT
| WestCAT branded Gillig Low-Floor BRT traveling along the JPX route | |
| Parent | Western Contra Costa Transit Authority | 
|---|---|
| Founded | 1977 | 
| Headquarters | 601 Walter Ave, Pinole | 
| Service area | Contra Costa County, California | 
| Service type | transit bus, express bus, paratransit | 
| Routes | 14 | 
| Stops | 300 | 
| Fleet | 57 | 
| Daily ridership | 4,944 | 
| Fuel type | Diesel, Gasoline, & Hybrid Electric | 
| Operator | MV Transportation | 
| Website | westcat.org | 
WestCAT is a public transportation service in western Contra Costa County (north of Alameda County). It is a service of the Western Contra Costa Transit Authority. Contra Costa County has four public bus transportation services, divided geographically into western (WestCAT), central (County Connection), and eastern (Tri Delta Transit) territories. Bayshore cities and communities along the western edge of Contra Costa and Alameda counties are served by the bi-county AC Transit, which is headquartered in Oakland, California.