REASONS FOR POPULARITY:
  Large vacancies: 30,000-50,000 posts in each recruitment cycle
  Low qualification: Class 12 or degree sufficient for most posts
  Job security: government job with pension and lifetime benefits
  Free railway travel: one of the best perks (pass for self and family)
  Transfers: across India (some see as advantage, others disadvantage)

COMPARED TO OTHER EXAMS:
  vs SSC CGL: Similar difficulty, but railway-specific GK needed here
  vs Banking: Less mathematics intensity, no banking awareness needed
  vs UPSC: Much simpler, faster result, state-level postings possible
  vs State PSC: Central government (RRB) vs state government

STAGE 1 — CBT 1 (Common to all posts):
  100 questions | 90 minutes | 100 marks
  Qualifying test: top scorers called for CBT 2
  Ratio: 20× the vacancy (e.g., 1000 vacancies → 20,000 appear in CBT 2)

STAGE 2 — CBT 2 (Post-specific):
  Separate CBT 2 for different categories of posts
  120 questions | 90 minutes | 120 marks
  Ratio: 8× the vacancy called for next stage

STAGE 3 — Skill/Typing Test (for select posts):
  Typing test for: Junior Clerk cum Typist, Accounts Clerk cum Typist
  Speed test for: Junior Time Keeper, Traffic Assistant
  30 words per minute (English) or 25 wpm (Hindi) typically required

STAGE 4 — Document Verification:
  Check original certificates: education, age, caste, medical fitness
  Medical examination at Railway Hospital

NOTIFICATION → EXAM → RESULT → JOINING: approximately 18-24 months
  Due to scale (millions of applicants) and multiple stages

NOTIFICATIONS: Check indianrailways.gov.in and all 21 RRB websites
  Also check: rrbcdg.gov.in | rrbsecunderabad.nic.in | rrbmumbai.gov.in