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.
New preliminary 2016 data shared Wednesday from the National Safety Council estimates that as many as 40,000 people died in motor vehicles crashes last year, a 6% rise from 2015. If those numbers bear out, it would be a 14% increase in deaths since 2014, the biggest two-year jump in more than five decades. It also means that 2016 may have been the deadliest year on U.S. roads since 2007, the NSC says. Crashes result in the very real cost of human life.