Metrobus service changes affecting District of Columbia passengers will begin Sunday. A series of service adjustments to these and other routes in the region in March and April will save an estimated $1.5 million a year in Metrobus costs, according to city officials.

Service reductions are planned on District of Columbia routes 30, 50, 70, 96, M2, M4 and P9. Public hearings on the service changes were held fall.

ROUTE 30 (Pennsylvania Avenue Line): Service between 2:15 a.m. and 4:50 a.m. on weekdays, Saturday and Sundays will be eliminated.

ROUTE 50 (14th Street Line): Service between 2:15 and 4:50 a.m. on weekdays, Saturdays and Sundays will be eliminated.

ROUTE 60 (11th Street Line): All service to Buzzard Point will be eliminated. Route 62 will be eliminated, and those trips to or from Half and O streets SW will be redesignated Route 60. Sunday service before 7 a.m. and after 9 a.m. will be eliminated.

ROUTE 70 (Georgia Avenue-Seventh Street Line): Service between 2:15 a.m. and 4:50 a.m. on weekdays, Saturdays and Sundays will be eliminated.

ROUTES 96 AND 98 (U Street -- Garfield Line): Route 98 will be eliminated. All trips will be redisignated Route 96 and operate via 29th Street, Cathedral Avenue and Woodley Street.

ROUTE M2 (Capitiol Hill-Fourth Street Line): Some rush-hour trips will be eliminated because of low ridership. New timetables will be available.

ROUTE M4 (Nebraska Avenue Line): Sunday service will be eliminated.

ROUTE P9 (South Capitol Street Parking Lot service): The 7 a.m. and 8:45 trips will be eliminated.

For information about these Metrobus schedule adjustments, call the transit Authority at 637-2437.