Metra on Monday acknowledged the confusion and began a public outreach effort that could potentially rename all of its lines by number or direction. For example, naming them M1 to M14 — with the “M” standing for Metra. Or naming them by their cardinal direction: N1, W1 and S1.

Metra is considering renaming its lines in the Chicago area. The rail agency has released a survey to gauge public feedback on the potential changes, saying it aims to “make the system easier to understand for new and occasional riders.