It was an ordinary Saturday shift for a Kansas City, Mo., city bus driver. Until two men without enough money for the fare boarded, then tackled and stabbed the driver as other passengers looked on. Thankfully, the bus driver was eventually hospitalized and recovered. And, because the entire event was caught on camera, video of the assailants was released to the public as police sought to identify them. Less than a week later, the men were identified and charged with the crime [sources: NBC News, Aegerter].
Kansas City isn't alone in installing camera equipment on its public transportation vehicles. In Washington, D.C., city bus cameras relay video and even audio feeds of passengers. So do the buses and trains in San Francisco, and in many other locales throughout the nation.
Although transit surveillance has, in some cities, been in force since the 1970s, it has become commonplace as recording devices have become smaller, and complaints and accidents have become more frequent [source: Berman].