This document evaluates the benefits, costs, and other impacts of a DOT rulemaking related to the accessibility of commuter rail transportation and intercity passenger rail service. In keeping with Executive Order 12866, Executive Order 13563, and DOT policy, the analysis has been prepared with the goal of "assessing the costs and benefits of regulatory alternatives," allowing policymakers to make regulatory decisions in lightof the "best reasonably obtainable scientific, technical, economic, and other information"(E.O. 12866).