Australian rail operator Connex is planning a new express rail service to cater for passengers who become ill on trains.

The move is aimed at reducing train delays due to passengers falling ill, a scenario which accounted for 3,000 train delays in the first four months of 2008, costing the company millions in poor performance penalties.

The current railway practice is to stop the train service for an ill passenger until an ambulance arrives.

The new express service will see see peak-hour trains with ill passengers that are within the central city area running directly to a central station. Flinders St Station has been proposed as the best destination where first aid can readily be made available.

The service would apply to inbound trains from Jolimont, North Melbourne, Richmond and South Yarra.

The proposal is under consideration by the State Parliament.