Cpl. Allan Dale Johnson, 41, a member of the Prince George's County police force since 1963, died Dec. 8 in Prince George's General Hospital of injuries he had received when he was struck by a vehicle two days earlier. Cpl. Johnson lived in Forestville.

A spokesman for the Prince George's County police said Cpl. Johnson was standing on the shoulder of Rte. I-95, writing a traffic summons for a van, when an automobile drove onto the shoulder and struck him. The investigation into the incident is continuing and no arrests have been made, the police spokesman said.

During his 19 years with the Prince George's police, Cpl. Johnson earned a "policeman of the month" award and received 42 letters of commendation. He helped develop the county police's first motorcycle unit, and helped start the department's Tactical Alarm Response Section (TARS), in which he worked as an undercover robbery officer. He also had served in the Special Operations Division and been stationed in Seat Pleasant and Oxon Hill.

Cpl. Johnson was a native of Renovo, Pa. He served in the Army from 1959 to 1963, including time with the elite 101st Airborne Division in South Korea, before retiring with the rank of sergeant.

He was a member of the Evangel Assembly of God Church in Camp Springs. He also belonged to Centennial Masonic Lodge No. 174 in Upper Marlboro.

Survivors include his wife, Sylvia Estella Graebner Johnson, a son, Grantallen, and a daughter, Cynthia Christine, all of Forestville; his mother, Sarah B. Johnson of Renovo; two brothers, Robert, of La Crescenta, Calif., and James, of Tucson, Ariz., and two sisters, Bette Schrimshaw of North Bend, Pa., and Sandra Wagner of Renovo.