Richard R. Sigmon, 53, an attorney who specialized in the law of transportation, died Friday at his home in Hyattsville as the result of a stroke.

Mr. Sigmon was born in Roanoke, Va., and grew up in Cleveland. After World War II service in the Navy, he attended the University of Chicago. He served in the Navy again during the Korean conflict and then earned his law degree from the University of Maryland in 1957.

He was an attorney for the Interstate Commerce Commission from 1957 to 1959. At the same time, he earned a master's degrees in law from George Washington University. From 1959 to 1965, he was assistant general counsel for American Trucking Associations, Inc. In the latter year, he joined the law firm of Rice, Carpenter and Carraway and remained with it until his death.

Mr. Sigmon was the editor of the 3rd and 4th editions of "Miller's Law of Freight Loss and Damage Claims." He also was a past president and chairman of the Association of I.C.C. Practitioners and was chairman of the I.C.C. Committee on Procedures at the time of his death. He lectured on transportation law at Southeastern University from 1964 to 1966. He was a member of the National Panel of Arbitrators and of the American and D.C. bar associates.

Mr. Sigmon also was an associate of the Smithsonian Institution and a member of the International Oceanographic Foundation.

Survivors include his wife, Maha Berniece, of the home in Hyattsville; a son by a previous marriage, Kurt Derek, of McLouth, Kan.; a brother, James, of Shawnee Mission, Kan.; a sister, Iona Taips, of Cleveland and one granddaughter.