Nebraska standard operator's licensed drivers (Class O) that are out of the state during their renewal period (60 days prior to license expiring for those turning 21, 90 days for all other renewals), may apply for renewal, prior to expiration or within one year after expiration of their operators license by mail. You cannot renew a Commercial Driver’s License or Identification Card by mail.  See Driver's Licensing Renewals Out-of-State for more information.