HOWEVER, he now tells me that he has lost confidence in it because it had to have the recalibration. I explained to him that any precision instrument needs to be recalibrated at times, but he is adamant that the Phantom is now unreliable. So... I'm short on reasons why IMU would need to be recalibrated.
The National Highway Traffic Safety Administration estimates that drowsy driving was responsible for 72,000 crashes, 44,000 injuries, and 800 deaths in 2013.4 However, these numbers are underestimated and up to 6,000 fatal crashes each year may be caused by drowsy drivers.5-7.
Full Answer. In the United States, more than 37,000 people die in traffic accidents each year. This is only a small portion of the 1.3 million people who die annually in road crashes every year globally. Around the world, between 20 and 50 million people are injured or disabled each year due to accidents.