Quaker City Cab Co. v. Commonwealth of Pennsylvania’s Empirical Analysis
277 U.S. 389 · 1928
Citation profile
54 federal appellate · 25 district · 146 state decisions
How this case has been cited
Cited by 348 later decisions (50 by the Supreme Court) — most recently July 2009 · most notably Payne v. Tennessee (1991), Lehnhausen v. Lake Shore Auto Parts Co. (1973)
54 federal appellate · 25 district · 146 state decisions — followed in 29 states
Later decisions citing this case, by decade. A case is still cited after being overruled — to note the reversal, distinguish it, or in dissent. The current decade is in progress, and our corpus holds fewer opinions from the most recent years, so the latest bars are undercounted — not a real decline.
Relationships
Relies on Royster Guano Co v. Commonwealth of Virginia · Flint v. Stone Tracy Co. · Paul v. Virginia · Gulf Ry Co v. Ellis · Magoun v. Illinois Trust & Savings Bank
Most-quoted passages
The sentences later courts lift from this opinion, ranked by how many decisions quote each — the parts of the opinion doing the work. These counts are smaller than the citation total above because most of the 348 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.
““The equal protection clause does not detract from the right of the State justly to exert its taxing power or prevent it from adjusting its legislation to differences in situation or forbid classification in that connection, ‘but it does require that the classification be not arbitrary but based on a real and substantial- dif ference having a reasonable relation to the subject of the particular legislation.’ ””
4 later decisions quote this exact passage · from the majority“classifications for the purpose of taxation must not be arbitrary, but must be based on a real and substantial difference and there must be no discrimination in favor of one against the other.”
3 later decisions quote this exact passage · from the majority“We call that action reasonable which an informed, intelligent, justminded, civilized man could rationally favor.”
2 later decisions quote this exact passage · from the majority
How this case has been treated — in progress
Whether each later court followed, distinguished, criticized, or overruled this decision. The treatment classification (task #35) runs highest-cited cases first and lights up here as it reaches this one.