Claudia Eleonore Miller, 18, a sophomore at the University of Maryland who was majoring in zoology, was fatally injured Friday in a traffic accident just outside Pittsburgh.

Pennsylvania State Police said Miss Miller was driving alone when her car hit a patch of ice and went out of control. It struck a median divider and then was hit by a following tractor-trailer. After other collisions between the divider and the truck, Miss Miller's car spun and she was thrown to the pavement, police said. She was pronounced dead on arrival at St. Clair Memorial Hospital in Mt. Lebanon, Pa.

Miss Miller, who lived in Chevy Chase, had gone to Pittsburgh to attend a concert with some friends.

A native of Suffern, N.Y., she grew up in New York, Connecticut and New Jersey.In 1977, the family moved to the Washington area and settled in Chevy Chase. Miss Miller attended Bethesda-Chevy Chase High School and later earned her high school equivalency certificate and went on to the University of Maryland.

She had worked two summers as a lifeguard at Seven Springs Village, an apartment complex in College Park.

Survivors include her parents, Eleonore and Martin Miller, and one sister, Jennifer, all of Chevy Chase, and one grandmother, Celia Miller, of Atlantic City, N.J.