The color-line Bautista is working — running toward the huge near-end transfer station 433.
The Canary Line is a color-coded route Daniel-Bautista is exploring as part of the allies' coordinated mapping. He interrogates its conductors for transfer-station data and pushes toward stop 433 — the last transit station before the end of the line — which intersects the Ochre-Line and nearly two dozen others (including some non-colored lines), so the party expects it to be unusually large. What the group finds during the Station-149 derailment experiment will determine Bautista's next move there.
A canary-yellow-coded route on the Iron Tangle's subway maps.
Bautista's assigned line, leading to the giant near-terminal station 433.