Minimum age required to appear for any of the RRB exams is 18 years but the upper age limit for different RRB exams is different for different posts. RRB NTPC Age Limit is up to 30 years, the RRB ALP age limit is up to 28 years and RRB JE upper Age limit differs as per the posts. Also, the relaxations in age are provided to differently-abled population.