This rulemaking would update the FHWA, FTA, and FRA NEPA implementation regulations at 23 CFR part 771. The regulatory updates coincide with the changes in the environmental review process for FHWA/FTA/FRA made by 23 U.S.C. 139. These changes include reduction in time periods in the environmental procedures that have already been implemented, as well as any changes necessary to address the procedural coordination revisions in the environmental review process made by MAP-21 and the FAST Act. This rulemaking will make the environmental review processes used by the operating administrations responsible for surface transportation more consistent, and is expected to reduce burdens on project sponsors. After further review, this rulemaking will be classified as a non-significant regulatory action, and not appear in future reports on significant rulemakings.