The Federal Highway Administration, Federal Transit Administration, and Federal Railroad Administration are proposing revisions to the Federal Highway & Federal Transit Administrations' joint implementation of the National Environmental Policy Act and Section 4(f) requirements. The National Environmental Policy Act requires federal agencies to consider the environmental impacts of major federal actions and to develop alternatives before taking the action. The proposal (1) modifies the Federal Highway & Federal Transit Administrations Environmental Impact and Related Procedures due to changes to the environmental review process made by the Fixing America's Surface Transportation Act and (2) modifies the Parks, Recreation Areas, Wildlife and Waterfowl Refuges, and Historic Sites regulations according to new exceptions created by the Fixing America's Surface Transportation Act. The proposal also includes the addition of the Federal Railroad Administration to the modified regulations listed above, making those regulations Federal Railroad Administration's NEPA implementing procedures and Section 4(f) implementing regulations, respectively. The agencies are requesting comments on all actions included in this proposal.