The iconic London taxi, known as a "Black Cab" or Hackney Carriage, is a purpose-built vehicle with a very distinct high-roof silhouette. Traditionally, they are the LEVC TX (electric) or the older LTI TX4 models. Despite the name, they aren't always black—they can be wrapped in colorful advertisements—but they are easily identified by the illuminated "TAXI" sign on the roof. They are designed for accessibility and practicality: they have a incredibly tight turning circle (25 feet) to navigate narrow London streets, and the interior is spacious enough to fit five or six passengers with a fold-down "jump seat" configuration. The driver is separated from the passengers by a partition, and there is ample room for luggage on the floor next to the driver or in the passenger compartment. If the yellow "TAXI" light on the roof is glowing, the cab is available for hire. These are different from "minicabs," which are private hire vehicles (like Uber) that must be pre-booked and look like regular everyday cars.