Under the government's 2010 strategic plan for 2020, the new alignment in the Wonju – Bongyang section would be laid out for 250 km / h, the rest to Jecheon would be upgraded for 230 km / h.
Under the government's 2010 strategic plan for 2020, this section would be laid out for 250 km / h.
Under the government's 2010 strategic plan for 2020, the entire line may see KTX service.
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