Answer: Research Designs & Standards Organisation (RDSO)
Notes: Recently Indian Railways commissioned Kavach 4.0 on the Mathura Kota section of the Delhi Mumbai route. Kavach 4.0 is an advanced automatic train protection system developed by Research Design and Standards Organization (RDSO) of Indian Railways to enhance safety and efficiency in train operations. It aims to reduce accidents by controlling train speeds and minimizing human errors using advanced technology. Kavach is designed at Safety Integrity Level 4 SIL 4 which is the highest safety standard. Kavach was first tested in South Central Railway from 2015 and got operational certification in 2018.
