The RRB Group D 2025 exam has seen an unprecedented 1.08 crore applications for 32,438 vacancies, with Mumbai, Chandigarh, and Chennai leading the pack. As competition intensifies, aspirants must focus on smart preparation strategies and stay updated with official announcements. This guide offers key statistics, detailed vacancy distribution, preparation tips, cut-off trends, FAQs, and career growth insights to help candidates succeed in this fiercely competitive exam season.