Officials said more than two crore individuals have applied for different posts in railways in response to the jobs announcement earlier this year.
The minister said there was a total of 9,000 job vacancies in the Railway Police Force (RPF) and Railway Protection Special Force (RPSF) and more than 10,000 other additional jobs up for grabs.
Officials said online tests will be held for jobs in the railway police, locomotive drivers and technicians.
The notification and application for Group C (26,502 Assistant Loco Pilot (ALP) and Technician posts) and Group D (62,907 posts) are already out.
The notification for RPF and RPSF will be published in the month of May 2018. The last date for Group C and D online application is March 31, 2018 till 23.59 hours, railways said.