In January 1992, a method was developed to reverse-calculate coasting time using driving resistance.
(3)
In January 2001, a test was run that compared the coasting test to the "high-speed coasting test," and the difference in results was found never to exceed 2.3%.
(4)
In February 2007, the testing manual was updated to add that "TRIAS (i.e., the coasting test) is to be used for DOM (i.e., vehicles for sale in Japan)." Nevertheless, the "high-speed coasting test" continued to be used thereafter.