 As a result of the rerouting of US 22, the road between Harrisburg and Reading would become a western extension of US 422 while the road between Reading and Allentown would become a northern extension of US 222.The changes were approved by the American Association of State Highway Officials on June 8, 1931.Signs were changed to reflect the new designations on May 31, 1932, with the new route designations officially in place on June 1, 1932.