[5] The broadcasts of the station names on Taitung line are made in five languages: Mandarin, Taiwanese Hokkien, Hakka, English, and Amis.

The north segment from Karenkō (花蓮港, now Hualien City) to Poshiko (璞石閣 ポシコ, then Tamazato, now Yuli) was built in 1909 and completed in 1917.

[6] In 2007, the Environmental Protection Administration gave the line a conditional pass for an electrification project, which would boost the operating speed from 110 km/h to 130 km/h.

As 69% of the line is still currently single-tracked, the project is expected to shorten wait times by up to 90 minutes with up to 16 more train services each day.

With an increase of 17,000 passengers per day, the dual-track railway project is expected to cost NT$25.429 billion, which will be completed 7 years after the environmental impact assessment and comprehensive planning are approved.