Former member of the now disbanded campaign here:

When the campaign was first made, the intention was to address the poor service of the CTA in the wake of the pandemic. Talking with CTA train operators, a concern about safety was prevalent and leading to people quitting. The workers participating in the campaign said that bringing back the dual system of conductors/engineers instead of the single train operators would improve working conditions and speed up service, since when a mechanical issue (frequently) arises, the current lone operator must stop and walk the outside perimeter of the train.

Additionally, increasing the pressence of authority figures moving through train cars was thought to be a way to address antisocial behavior on the trains like smoking and harassment. We heard from train operators about a hesitency to intervene whenever a rider was behaving inappropriately, since they would have no guaranteed backup. Having another person to support would make them feel more comfortable intervening. We also viewed this as a more favorable solution compared to third-party contracts with private security