Answer: Mumbai-Surat Flying Ranee
Notes: The Mumbai-Surat Flying Ranee received double-decker coaches on December 18, 1979. The train originally started in 1906 as a weekend service. Double-decker coaches were added during its Western Railway operation. The service connects Mumbai and Surat. Flying Ranee’s double-decker feature was upgraded to LHB-class coaches in 2023. The first air-conditioned double-decker train started in 2011, but Flying Ranee was the first non-AC double-decker.
