A new set of guidelines and regulatory approvals issued by the Indian Railways on Monday will permit a full 12-coach walkthrough design for air-conditioned local trains to be manufactured in the future. The completely vestibuled AC local train, with all electricals and equipment underslung near the wheels, will be able to ferry more passengers than regular AC trains, and one such test train is at the Mumbai Central station.

The other items that will be provided to the new set of AC local trains include a fire detection system and automatic smoke and fire detection alarms. The motorman/guard will also have entry/exit provision from the passenger area.