expression, godan verb (iku/yuku class)
to be on the right track; to go well
Used when something is progressing favorably or as expected. Often implies a positive trajectory, similar to いい線行く.
See also: いい線行く (いいせんいく)
彼の研究は良い線行っていると思う。
I think his research is on the right track.
この調子なら、プロジェクトは良い線行くでしょう。
At this rate, the project will go well.