This program comment provides the Federal Communications Commission (FCC) with an alternative way to comply with its responsibilities under Section 106 of the National Historic Preservation Act, 54 U.S.C. 306108, and its implementing regulations, 36 CFR part 800 (Section 106), with regard to the effects of wayside poles and associated infrastructure installed by the nation's freight and passenger railroads to deploy Positive Train Control (PTC) systems on historic properties. It also relieves other federal agencies from the need to conduct separate Section 106 reviews regarding the effects of such poles and infrastructure. On May 5, 2021, the Program Comment's duration was extended to May 16, 2026.