In this paper, a new broken rope protection device for incline tramroad vehicle was stated.The design was discussed in this cuniform increase power safety device of breakage rope and test was done.
Despite that, limited domestic air travel resumes there this week, with employees disinfecting bags and some travelers wearing conspicuous safety gear.
And the two planes that crashed didn't have the optional angle-of-attack safety feature that could have alerted pilots if the plane was pointing in the wrong direction, and that Boeing charged extra for.