The document discusses the evolution of transportation technology, emphasizing the drastic speed increases from early bullock carts to modern aircraft and space travel. It highlights the critical role of black boxes, or flight data and cockpit voice recorders, in investigating air crashes and providing insights into their causes. As air travel risks grow with speed, black boxes are essential for answering crucial questions regarding flight safety.

1. ABSTRACT
BLACK BOX
As the ages of mankind progressed there was a rapid change in the means of transportation with
technology starting from the days of bullockcarts to the present days of planes,drones and space
shuttles. Travel speed increased from miles/hr to the speed of light.
The source to destination became so closer to each others. There was an advancement in the
field of the air traveling system with the help of airplane. But as the speed increases , the horror
of air crash also introduced. Because at a height of 2000m and above if a plane crashes ,it will be
a terror for any body. So to take the feed back of the various activities happens in the plane and
record them engineers need a mechanism to record such activities .
With any airplane crash, there are many unanswered questions as to what brought the plane
down. Investigators turn to the airplane's flight data recorder (FDR) and cockpit voice recorder
(CVR), also known as "BLACK BOXES" for answers. In recent times these black boxes helped
to know answers for many of issues regarding the crashes and may come to help to solve many
cases in the future also.so these black boxes play a vital role in this modern world with the
advancement of technology