In the United Kingdom, licensed taxi drivers have a legal exemption from wearing seat belts under specific professional circumstances. According to the Road Traffic Act 1988, drivers of Hackney Carriages (traditional "Black Cabs") are exempt at all times while they are "plying for hire" or carrying passengers within their licensed area. For Private Hire Vehicle (PHV) drivers (like Uber or minicabs), the exemption only applies when they are actually carrying a passenger. The historical reasoning for this exemption is twofold: it allows drivers to easily get in and out of the vehicle to assist passengers with luggage, and it is a safety measure to prevent a driver from being "restrained" or strangled by their own seat belt in the event of an assault by a passenger. However, the exemption ends the moment the driver is off-duty or driving for personal use. Crucially, passengers in taxis are not exempt and must legally wear a seat belt at all times, with the driver being responsible for ensuring children under 14 are correctly restrained.