A major rerouting of Metrobuses in much of suburban Maryland is planned in November, when the Metrorail route from Washington to Silver Spring is opened for passenger service.

Most bus routes that now enter the District of Columbia through Silver Spring will be terminated at the Silver Spring Metrorail station on Colesville Road if the Metro board agrees after it helds hearings on the staff proposals. Other bus routes would be shifted under the proposal to connect with trains at Takoma. Fort Totten and Brookland, the three new rail stations to be opened within the District on the Silver Spring route.

The rail line that will run to Silver Spring now terminates at the Rhode Island Avenue station in northeast Washington.

The bus changes being proposed in conjunction with the opening of the Silver Spring rail route are separate from another sequence of changes, already decided on, that will be made in July.

The July changes will coincide with the opening of the Metrorail route from Stadium-Armory station in Washington through the downtown area to Rosslyn and National Airport in Arlington County.

Not all of the Maryland bus route changes planned for November will involved the corridor of the Silver Spring rail route.

Now, direct all-day bus service will be introduced between Rockville and the Dupont Circle area of downtown Washington. There has been no such direct service on Rockville Pike and Wisconsin Avenue - except during rush hours - since an old trolley route was discontinued between Friendship Heights and Rockville in the 1930s. Local buses were substituted at that time.

While the Rockville-Bethesda area would get this new service, the Hyattsville-College Park and the Langley Park-Adelphi areas of Prince George's County stand to lose direct bus service downtown.

Metro plans to terminate the 82, 84 and 83 bus routes on Rhode Island Avenue at the Rhode Island Avenue train station. It plans to terminate the K-6 bus route on New Hampshire Avenue at the Fort Totten train station and to discontinue the k-7 and k-9 buses entirely.

During the hours that Metrorail trains are running - from 6 a.m. to 8 p.m. on Weekdays - this should not prove troublesome. At other times, however, Maryland passenger would have to ride a District bus line to and from downtown, transfering between buses outside the train station.

As part of the change in November, Metro plans to begin running a new bus route, E-6, that would replace the part of the 83, 84 and 88 buse lines between the Rhode Island Avenue train station and downtown.

Another proposed change, entirely within the District, would affect Maryland commuter who arrive at Union Station by suburban train and travel by bus to southwest Washington.

For the past couple of years, Metro has run a special bus line, m-3, to provide this service. Metro plans to discontinue this shuttle route. Passengers either would use other bus routes or the subway, which would require a transfer between Metro trains at the Metro Center station.

Three bearings will be held next week on the changes of bus routes described in this article. For space restans, the descriptions of the proposed changes must be condemed and many changes omitted.

Details of the Metro proposals are continued in a 153-page Metro document, called Document B-77-2, which can be inspected at many public libraries or at Metro headquarters, 600 5th St. NW. Metro's marketing office who will answer questions by telephone at 637-1328.

The bearings, all to begin at 7:30 p.m., will be held Monday at the Prince George's County Service Building, 5012 Rhode Island Ave., Hyattsville; Tuesday at Montgomery Blair High School, 501 Dale Dr., Silver Spring, and Wednesday at LaSalle School, Riggs Road and Madison Streets NE, Washington. Maryland residents can testify at any of the hearings.

Following is a summary of some of the major changes proposed by the Metro staff for Maryland riders. Note again that the changes are summarized in this article, and very much condemned. It also is emphazized that numerous rush-hour routes not inflicated in this article will be turned back at rail station. This includes all service coming into Silver Spring from the north.

TAKOMA - Route J-6, which new goes from Silver Spring to downtown, would be terminated at the Takoma train station, and would be remembered E-6.

CONNECTICUT AVENUE - Route L-6 to Garrett Park would be discontinued, and service on route L-6 to Aspon would be increased.

GEORGE AVENUE - Although primarily a District route, it provides a major link now between downtown Washington and Silver Spring. Route 70, the main local route, would continue to run most of the day, but in rush hours it would terminate within the District, at Georgia Avenue and Kennedy Street NW, and to go all the way to Silver Spring. Rush-hour service to Silver Spring would be provided by a new No. 71 route, running as an express for much of the distance within the District.

ROCKVILLE PIKE - New routes T-7 and T-9 would run all day from Rockville to Dupont Circle, and at night on weekends from Rockville to Friendship Heights. T-7 would run via. Old Georgetown Road, T-9 via Rockville Pike the entire distance in Montgomery County. They would provide new local service in the District on Wisconsin and Massachussetts Avenues. Existing T-4 and T-6 would be spilt off to form new District routes, with rush hour service to Bethesda.

GAITHERSBURG - A new T-B route would replace sporadic service by seven other routes between Rockville Mall and Montgomery Village in Gaithersburg, via Washington Street, Frederick Avenue (Md. Rte. 366) and Montgomery Village Avenue.

RIVEEDALE - COLLEGE PARK - Increased and realigned service is planned on a newly renumbered F-4 route from Silver Spring Metro Station to Greenbelt and on a newly renumbered F-6 route from Silver Spring to new Carrollton Mall via Queensbury Road and Riverdale Road.

NEW HAMPSHIRE AVENUE - Route K-4, which now goes from White Oak to downtown Washington, would be terminated at all times at the Fort Totten Metrorail station. When Metro trains are not running, passengers could transfer to K-2 local or other routes. Express routes K-7 and K-9 to be discontinued.