A subway color-line intersecting the Beige Line in the Iron Tangle.
The Coquelicot Line (a poppy-red hue) is one of the Iron Tangle's many color-coded rail routes, mentioned by Imani-C as intersecting the Beige-Line near her crew's position at station 241. It's one more thread in the tangle the party and its allies are charting while hunting for the floor's stairwells.
A poppy-red-coded route on the Iron Tangle's subway maps.
A minor intersecting line noted while mapping the tangle.