Highway Post Office

First Highway Post Office bus, 1941

Due to the continual withdrawal of so many Railway Post Office (RPO) trains, the Post Office Department decided to experiment with the distribution of mail on large buses, equipped somewhat like RPO cars. On February 10, 1941, experimental service started on the Washington, DC & Harrisonburg, Virginia HPO. It was a success from the start, but, due to World War II, expansion of this service was delayed for several years. After the war, the service increased rapidly, with more than 130 routes established between 1948 and 1955. As this service was somewhat enmeshed with the RPO service, its value decreased when RPOs were abolished. The last service of this type to operate in the U.S. was the Cleveland, Ohio, & Cincinnati, Ohio HPO, which was discontinued in 1974.

Sources

Wilking, Clarence. (1985) The Railway Mail Service, Railway Mail Service Library, Boyce, Virginia. Available as an MS Word file at http://www.railwaymailservicelibrary.org/articles/THE_RMS.DOC

United States Postal Service

Organizations	American Letter Mail Company American Postal Workers Union Board of Governors of the United States Postal Service Bureau of Transportation Citizens' Stamp Advisory Committee National Alliance of Postal and Federal Employees National Association of Letter Carriers National Association of Presort Mailers National Postal Mail Handlers Union National Rural Letter Carriers' Association Postal Regulatory Commission Postal Transportation Service PostalWatch Incorporated United States Postal Inspection Service United States Postal Service Office of Inspector General

Systems	Address Management System Advanced Facer-Canceler System Coding Accuracy Support System Flats Sequencing System Locatable Address Conversion System United States Postal Savings System

Services	Click-N-Ship Express mail in the United States National Change Of Address Permit mail Permit Reply Mail Postal notes Railway Mail Service Registered mail Special Delivery Special handling

Facilities	Air Mail Facility Boat Railway Post Office Community post office Dead letter office Highway Post Office J. W. Westcott II List of United States Post Offices National Postal Museum Network Distribution Center Railway mail service library Red Brick Roads Sectional center facility Streetcar Railway Post Office Terminal Railway Post Office

Legal	Comstock laws Post Office Act Postal Reorganization Act Postal Service Act Private Express Statutes Rural Post "Good" Roads Act of 1916 Title 39 of the United States Code

Related	Airmails of the United States CAR-RT SORT Catcher pouch Cimarron Redoubt Domestic Mail Manual Facing Identification Mark Flats Information-Based Indicia The Inspectors Intelligent Mail barcode Label 228 List of postal killings List of U.S. state abbreviations List of United States airmail stamps Mail bag Mail cover Mail hook Mail Isolation Control and Tracking Mail jumping Mail pouch Mail sack Mail satchel The Mail Story Nixie ORM-D Owney (dog) Pony Express mochila Postage stamps and postal history of the United States Postal Alpha Numeric Encoding Technique Postal Clause Postal worker Postmaster General Prohibitory Order Remote Bar Coding System Rural Free Delivery Rural letter carrier STD-4C United States post office murals List of murals USPS Post Office Box Lobby Recycling program United States Postal Service creed

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Highway Post Office

See also

Sources