Mumbai, Aug. 2 -- A prototype of a closed door in a non-air-conditioned local train is ready, 50 days after the tragic Mumbra incident on June 9 when five people died after falling off two overcrowded trains passing each other. The Central Railway's (CR's) Kurla car shed has developed this first prototype, which will be showcased to the chairman of the railway board (CRB), the top bureaucrat of the Indian railways, on August 4. This will be the first time that a closed door coach is being prepared for a non-AC local on CR. In 2019, Western Railway had tried installing closed doors in non-AC locals, but the initiative was recalled due to overcrowding and ventilation issues. However, after the Mumbra incident, Union Railway Minister Ashwini Vaishnaw announced the decision to reintroduce closed doors in non-AC local trains. CRB Satish Kumar is expected to visit the city on Sunday and Monday to inspect the prototype, which has been fitted in one coach of a non-AC local train. A CR official said, "This is a prototype of the closed door system that is yet to get a go-ahead. We have fitted this system in a single coach where it can be operated by the motorman or train manager." The main concern with such doors in non-AC trains is reduced ventilation, which can lead to suffocation. To address that, CR took into consideration the need to redesign the door and its close mechanism. After the Mumbra incident, the Railway Board decided that all non-AC trains will be designed and manufactured with improved ventilation. Along with the closing doors, ventilations units are to be added to pump in fresh air into coaches. CR also plans to add vestibules connecting coaches so that passengers can move freely. In addition to the 238 AC local trains being manufactured for the city's suburban rail network, more non-AC locals are also being redesigned to cater to the 6.5-7 million passengers who commute daily on the local trains....