Conversion to Automated Mail Processing Should Continue; Nine-Digit Zip Code Should Be Adopted if Conditions Are Met

摘要

Congress put a hold on the Postal Service's implementation of the proposed nine-digit ZIP Code Program (ZIP + 4) and asked GAO to review its soundness. In particular, GAO was tasked with reviewing the--accuracy of the Postal Service's financial projections, likelihood that the new automated equipment intended for use with the program--especially optical character readers and bar code sorters--would perform as intended, and potential impact of ZIP + 4 on mailers.