New York's yellow taxis became a citywide rule in 1967

A cab’s color solved a street-level problem

In early-20th-century New York, a taxi had to be recognized quickly amid crowded streets, moving vehicles, and pedestrians. A color that stood out from a distance made it easier for a waiting passenger to pick out a cab—and for a driver to signal that the vehicle was for hire. Red and green were among the colors used by the city’s taxi fleets, which did not all share one uniform look.

A 1915 study pointed toward yellow as a more visible choice. The practical idea was simple: a cab that caught the eye sooner could be identified sooner. That mattered most when someone was scanning traffic, not inspecting a car up close.

Visibility became part of the taxi’s identity

Yellow’s advantage was not just decorative. A distinctive, easy-to-spot color helped separate taxis from the general flow of vehicles, turning paint into a kind of street-side signal. It also made the taxi easier to recognize repeatedly, so the color could become part of what people associated with the service.

The change was a move toward a more legible taxi, not proof that every cab in New York instantly changed color. The memorable consequence is that a decision about visibility helped shape the familiar look of the city’s cabs: the color was meant to be noticed before the passenger had to read a sign.