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United States v. Rock Island Motor Transit Co.

340 U.S. 419 · Decided February 26, 1951 · 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

United States v. Rock Island Motor Transit Co. was decided on February 26, 1951 by a vote of 5–4. The Court reversed the lower court's decision. Justice Stanley F. Reed wrote the opinion of the Court. SCDB classifies its main issue as “Judicial review of agency actions” in the Judicial Power area.

Read the opinion

Case details

Citations
340 U.S. 419 · 71 S. Ct. 382 · 95 L. Ed. 2d 391 · 1951 U.S. LEXIS 2385
Docket number
25
Decided
February 26, 1951
Argued
November 7, 1950
Court era
Vinson Court
Decision type
Opinion of the Court (orally argued)
Disposition
Reversed
Outcome for petitioner
The petitioning party received a favorable disposition
Vote
5–4
Majority opinion
Stanley F. Reed
Opinion assigned by
Fred M. Vinson
How the case arrived
Appeal
Issue area
Judicial Power
Legal provision
Motor Carrier Act
Type of law
Federal statute
Decision direction (SCDB)
Conservative what this means

How the Justices voted

JusticeVoteSeparate writing
Justice Hugo L. BlackDissentCo-authored an opinion
Justice Stanley F. ReedMajorityWrote an opinion
Justice Felix FrankfurterMajority
Justice William O. DouglasDissentCo-authored an opinion
Justice Robert H. JacksonDissentCo-authored an opinion
Justice Harold H. BurtonDissentCo-authored an opinion
Chief Justice Fred M. VinsonMajority
Justice Tom C. ClarkMajority
Justice Sherman MintonMajority

Full case caption

United States et al. v. Rock Island Motor Transit Co. et al.

SCDB identifiers: case 1950-035, docket 1950-035-01.

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Cases on the same legal provision: Motor Carrier Act

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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