An 89-year-old Northwest Washington woman was injured yesterday when the bus she was riding in collided with a car and overturned, D.C. police reported. They said the car also collided with a vehicle from the Embassy of Cameroon and knocked down a 100-foot fence before coming to a halt.

One other person suffered minor injuries during the accident, which occurred about 9:40 a.m. near Third and Peabody streets NW, police said.

The injured woman was identified as Kathryn Irwin of 304 Aspen St. NW, who was taken by ambulance to the Washington Hospital Center's Medstar unit and was in fair condition yesterday with a broken left collarbone and bruises, a spokeswoman for the hospital said.

The driver of the bus, Willie McLaughlin, 36, of 603 Morton St. NW, was treated at the hospital for minor injuries and released, police said. The bus, which is owned by the city, is leased to the United Planning Organization, which uses it to provide transportation for the elderly and handicapped under contract with the D.C. Office on Aging, a spokeswoman for the company said.

Police said the incident occurred when a car westbound on Peabody Street NW stopped at a stop sign at Third Street NW, then attempted to continue through the intersection and collided with the bus, which was traveling south on Third Street. Police said the driver of the car apparently did not see the oncoming bus, which they said had the right of way.

The car, driven by Obie Wright, 41, of 1108 Kindwood Dr., Takoma Park, collided with the right rear of the bus, causing it to swerve and overturn, police said. They said the car then struck another car owned by the Embassy of Cameroon, which was being test driven after recent repairs, and crashed into a 100-foot chain-link fence in front of 5940 Third St. NW before coming to a stop.

The driver of the embassy's car, identified as Mark Pennington, 27, of 216 Baltimore Rd., Rockville, was not injured, police said.

Police said Wright, who was not injured in the incident, was charged with failure to yield the right of way.