Clarification: For CDL or CLP holders who have proof of a valid medical certification or medical variance that expired on or after March 1, 2020, but before June 1, 2020, the requirement to renew the medical certification or variance is waived until October 31, 2020. For CDL or CLP holders who have proof of a valid medical certification or medical variance that expired June 1, 2020 or after, the requirement to renew the medical certification or variance is waived until December 31, 2020.