The Surface Transportation Board (STB or Board) is adopting final rules that update the accounting and reporting requirements in its Uniform System of Accounts (USOA) for Class I Railroads so that they are more consistent with current generally accepted accounting principles (GAAP). The Board is also revising the schedules and instructions for the Annual Report for Class I Railroads (R-1 or Form R-1) to better meet regulatory requirements and industry needs.