Hello

If you have passed 12th in Commerce and are currently pursuing 2nd year in Arts, you may be eligible for some Railway Controller or related posts, but not all. Most Railway Controller or Traffic Apprentice jobs require at least a graduation (any stream). So, after completing your degree, you will be more strongly eligible.

For now, focus on completing your graduation, and keep an eye on RRB (Railway Recruitment Board) notifications they clearly mention the required qualifications