Bus will board on the red curbside directly across the street from the train shelter, in front of the Amtrak Bus Stop street sign. If you don't see a green FlixBus close to your departure time, the bus may be white and have other branding. Check in with drivers of other buses in the area.
The bus boards from the bus bays on the west side of Bakersfield Train Station. Look for the yellow traffic poles with “Greyhound” written on them. The bus will board at either of bays in front of the shaded waiting area.