Electronic Data Recorders (EDR) are the so called black boxes that are on vehicles to record key facts about the vehicles status just before and after a severe collision. The EDR may record various data depending on the manufacturers preference. Such data may include vehicle speed, de-acceleration, engine parameters, brake parameters, accelerator pedal information, seat belt usage, airbag deployment, occupant weight or seating positions and other information. This information allows the crash to be better understood and allows for improvements in future vehicle designs. It also allows accident recreation to be better understood for cause and effect. The US government will require all future vehicles to have this type of device.