RMS Full Form – What Is RMS, Definition, Meaning, Uses

RMS Full Form – What Is RMS, Definition, Meaning, and Uses will be discussed here. From the mid-nineteenth century until the mid-twentieth century, the United States Post Office Department’s Railway Postal Service was an effective mail transportation service in the United States. From the 1890s until the 1960s, the RMS and its successor, the Postal Transportation Service (PTS), transported the great majority of letters and packages mailed in the United States.

RMS Full Form

Railway Mail Service is the full form of RMS. The Department of Posts (DoP) in India operates the Railway Mail Service (RMS), which transports and delivers mail. The RMS is in charge of sorting and dispatching all train mail.

RMS: Railway Mail Service

RMS Full Form
RMS Full Form


The Railway Mail Service was founded by George B. Armstrong, the manager of the Chicago Post Office, who is often credited with inventing the notion of en route mail sorting aboard trains. Before Armstrong participated in the system, mail was transported in closed pouches aboard trains. Still, there was no structured method of sorting mail en route to have mail ready for delivery when the mail pouches arrived at their destination city.

On August 28, 1864, the first railway post office (RPO) opened on the Chicago and North Western Railway between Chicago and Clinton, Iowa, in response to Armstrong’s request to test the concept. The model was successful and was adopted by other Chicago-based railways such as Chicago, Burlington, Quincy, Chicago, and Rock Island, Pennsylvania, and Erie.

The Railway Mail Service had grown to practically all the principal railroads in the United States by 1869 when it was officially started, and the country had been divided into six operating divisions. Each division was overseen by a superintendent appointed by George B. Armstrong, who had been summoned from Chicago to Washington, D.C., to become the postal railway service’s general superintendent. Armstrong was only general superintendent for two years before retiring due to ill health. He died two days after resigning in Chicago on May 5, 1871.

George Bangs, Armstrong’s successor in Chicago, was named the second general supervisor of the postal train system. Bangs promoted the employment of fast mail trains, which were entirely made up of mail cars and ran on a schedule designed to meet the Post Office’s demands rather than the needs of the general public.

In 1890, 5,800 postal railway clerks worked on 154,800 miles (249,100 kilometers) of the track. By 1907, almost 14,000 clerks were working on a railroad totaling 203,000 miles (327,000 km). The RMS created Terminal Railway Post Office operations in key cities to accommodate the substantial increase in mail flow when the post office began processing parcel posts in 1913.

The Railway Mail Service peaked in the 1920s and began to fall as RPO service on branch lines and secondary routes were discontinued. Following the closure of several railway post offices in 1942, the Highway Post Office (HPO) service was used to continue en route sorting. The Railway Mail Service was renamed the Postal Transit Service when highway mail transportation became more common.

In the late 1950s and early 1960s, route abandonment escalated, and many surviving lines were shut down in 1967. The Cleveland and Cincinnati highway post office, the last HPO route, was decommissioned on June 30, 1974. On June 30, 1977, the previous train post office between New York and Washington, D.C., was closed.

Armstrong is commemorated by a massive bust and monument on the north side of Chicago’s Loop Station Post Office.

RPO train vehicles that have been preserved and repaired – RMS Full Form

The Pioneer Zephyr exhibit at the Chicago Museum of Science and Industry includes a restored RPO car. The Pacific Southwest Railway Museum in Campo (San Diego County), CA, has a restored 1927 AT&SF Railway #74 RPO car on display.

The Smithsonian National Postal Museum re-created a railway mail train in its Atrium for the permanent exhibition, Mail by Rail. A decommissioned mail car provided the inside furnishings. Smithsonian artists produced the outer part of the Railway Post Office train.


Q1. What business is RMS?

RMS is a risk management business that leads the field in risk intelligence. For more than 30 years, RMS has been developing market-leading risk management solutions for insurers, reinsurers, financial services companies, and the public sector.

Q2. RMS definition in electrical terms

RMS stands for mean root square, as was previously stated. Despite having a complex calculation, RMS essentially determines the equivalent direct current (dc) value of an ac waveform. To put it technically, it establishes the “effective” or dc heating value of any ac wave shape.

Q3. RMS bill of entry: what is it?

The RMS makes it easier for Importers/CHAs to provide accurate information in the submitted Bill of Entry. The system finds any Bill of Entry flaws, which then directs such Bills for action.

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