Metrobus service for passengers with impaired mobility will be expanded to 24 new routes on Sept. 23.

As an aid to elderly passengers or those in wheelchairs, Metro will provide life-equipped buses on some heavily-traveled routes which serve hospitals, medical centers, shopping centers and senior citizen complexes.

Not all buses on each route are equipped with lifts; those with lifts are marked with a wheelchair symbol. To obtain a mailed timetable of life-equipped buses, call Metro at 637-1261. To receive the information by telephone, call 637-2437.

Buses equipped with lifts will begin operating Sept. 23 on the following routes:

50 -- Takoma Park to Bureau of Engraving via 14th Street.

70 -- Silver Spring to Southwest Terminal or Fort McNair via Georgia Avenue and Seventh Street.

80 -- Fort Totten to Potomac Park via North Capitol Street and H Street.

96 -- McLean Gardens to D.C. General Hospital via Union Station.

E2 and E4 -- Ivy City or Eastern and Kennedy to Friendship Heights via Fort Totten.

H2 and H4 -- Westmoreland to Fort Lincoln via Washington Hospital Center, Veterans Administration Hospital and Children's Hospital.

L2 and £4 -- Chevy Chase Circle to Federal Triangle via Connecticut Avenue.

N4 -- Glen Echo to Farragut Square via Massachusetts Avenue.

P2 -- Takoma to Federal Triangle via 13th Street.

M8 -- 22nd and K streets to Waterside Mall via downtown.

Handicapped and elderly passengers ride buses and trains at reduced rates. Passengers who are 65 or older may obtain the required identification cards at any library. Handicapped persons may call 637-1245 for information on obtaining identification cards.

Demonstrations of life-equipped buses will be given from 10 a.m. to 2 p.m. Oct. 4 at Sharpe Health School, 4300 13th St. NW.

Lift-equipped buses have been operating since July 1 on routes A2, A4, A6, A8, A12, D2, D4, D8, M6, M8, N4, R2, S2, S4, X4, X6, T4, T6, and routes 30, 32, 34, 36, 40, and 42.