Hyderabad Green line metro used to transport heart for emergency transplant by creating a dedicated green channel.

https://www.newindianexpress.com/cities/hyderabad/2025/Jan/18/hyderabad-metro-rail-creates-13-km-green-channel-to-facilitate-heart-transplant

https://www.newindianexpress.com/cities/hyderabad/2025/Jan/18/hyderabad-metro-rail-creates-13-km-green-channel-to-facilitate-heart-transplant