"Gypsy cabs" is a colloquial term for unlicensed, for-hire vehicles that pick up passengers without the proper permits, insurance, or regulatory oversight. They are illegal primarily because they bypass the safety and consumer protection standards required of official taxis and ride-share services. Licensed cabs are subject to rigorous vehicle inspections, and their drivers must undergo background checks and hold specific commercial insurance that protects passengers in the event of an accident. Gypsy cabs lack these safeguards, meaning passengers have no legal recourse or insurance coverage if injured. Furthermore, they do not use regulated taximeters, often leading to "price gouging" where drivers demand arbitrary, high fares at the end of a trip. In cities like New York, the legality is also tied to the "Medallion" system; only yellow medallion cabs are legally authorized to respond to street hails. While these unregulated services historically filled gaps in underserved neighborhoods where legal cabs refused to go, the rise of regulated apps has made them largely obsolete and increased enforcement due to the inherent risks to public safety and fair competition.