Most vehicles today are equipped with a so-called “black box,” which is technically known as an event data recorder, or EDR. Black boxes are basically computers that store data from a vehicle’s sensors, including video, sound, GPS, position, speed and time. Black boxes are usually below the center of the dashboard or beneath seats to protect them from damage. When a vehicle is involved in a crash, the black box can give moment-by-moment data, including speed, acceleration, braking, blinker use, etc. This is why black boxes are increasingly being used in investigations. They can tell investigators or accident reconstructionists whether a driver was speeding, driving recklessly, or using their cell phone, for example.