The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
The Korea Herald's report on the 7 March 2024 groundbreaking gives a target opening year of "2030", so the pin sits at the end of that year.
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14 stations with subway interchange opportunities, as reported at groundbreaking.
“14 stations”
82 km linking Incheon, Seoul and Namyangju; the wider six-line network is excluded.
“82-kilometer railway”
GTX-B groundbreaking reported
“March 7, 2024”
Travel between Songdo, Incheon and central Seoul is slow.
How: The 82 km GTX-B express line with 14 stations cuts the Songdo to central Seoul trip to about 30 minutes.
