Not sure about Ground.
The policy at Express has been that you must inform FedEx of a violation prior to the next time you operate a company vehicle. Failure to report typically results in termination.
The policy also kept one in a driving position if your license was not suspended or revoked pending conviction. If acquitted, then no changes. If convicted or plead guilty, then removed from driving. You can drive again 1 year after reinstatement if you maintain Express employment.
At Ground all drivers are guilty until proven innocent. Many suspensions in my old terminal that resulted in needing to retest drivers after they were found in the right.