In short
Most US states test motorcycle skills in a closed parking-lot course (figure 8, U-turn, slalom, quick stop). Some have additional road portions. Driving Routes covers state-specific routes where road tests apply.
FAQ
How does the US motorcycle road test work?
Most US states use the MSF (Motorcycle Safety Foundation) Basic RiderCourse evaluation as the road test, conducted in a parking lot — figure 8, U-turn, swerve, quick stop.
Do I need to take the road test on a motorcycle?
If you complete an MSF course in many states, you may skip the on-road test. Check your state DMV's requirements.