Method of measuring the safety against derailment by running through a twisted test track in AS 7509. 1"Railway Rolling Stock-Dynamic Behavior-Part 1: Locomotive Rolling Stock". which published in 2009 in Australia. was briefly introduced in this thesis. https://www.nacrack.com/flash-choice-Netgear-Nighthawk-LTE-Mobile-Hotspot-Router-Mobile-Hotspot-LTE-BRAND-NEW-p8608-best-super/