Previous TRAS events:
TRAS-1 www.sti.or.th
TRAS-2 http://web.eng.nu.ac.th/eng2012
TRAS-3 www.facebook.com/events/the-3rd-thailand-rail-academic-symposium-tras2016/107095706413588
TRAS-4 https://www.tras2017.com
TRAS-5 https://www.engineer.rmutt.ac.th/tras2018/