CaseTrail

O'Neill v. Baltimore & Ohio Railroad Co.

348 U.S. 956 · Decided March 7, 1955 · Supreme Court of the United States

Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.

At a glance

O'Neill v. Baltimore & Ohio Railroad Co. was decided on March 7, 1955 unanimously (8–0). The Court reversed the lower court's decision and remanded the case. The decision was issued per curiam (an unsigned opinion of the Court). SCDB classifies its main issue as “Miscellaneous economic regulation” in the Economic Activity area.

Read the opinion

Case details

Citations
348 U.S. 956 · 75 S. Ct. 447 · 99 L. Ed. 2d 747 · 1955 U.S. LEXIS 1101
Docket number
105
Decided
March 7, 1955
Argued
March 2, 1955
Court era
Warren Court
Decision type
Per curiam (orally argued)
Disposition
Reversed and remanded
Outcome for petitioner
The petitioning party received a favorable disposition
Vote
8–0 (unanimous)
Opinion assigned by
Earl Warren
How the case arrived
Certiorari
Decision direction (SCDB)
Liberal what this means

How the Justices voted

Full case caption

O'Neill v. Baltimore & Ohio Railroad Co.

SCDB identifiers: case 1954-060, docket 1954-060-01.

Other cases on “Miscellaneous economic regulation”

See all

Same Term, same area (Economic Activity)

See all

Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error