A Look at the New Prisoner Transport System in the Capital

 To add additional security, prisoners are typically restrained while in transport and may be physically secured to the vehicle, handcuffed while in the secured area, or a combination of both. These vehicles are usually built by an authorized second-stage vehicle modifier who will affix the National Safety Mark to the vehicle after completion and testing. In the past police officers were used to carry prisoners on horse-drawn wagons, but they gave way to vans in the 20th Century.