new orbital railway is proposed in the outer western suburbs of Melbourne coming Werribee, Sunbury and Craigieburn.Two railway service type options are to be assessed for their suitability and ability$$ Option $1$ is a fully underground Metro $/$ Subway$$ Option $2$ is an at grade Light Rail SystemKey details for the options are:$$ Route length $($double track for both options$)$ Option $1$Werribee to Sunbury $-35$kmSunbury to Craigieburn $-20$km$$ Option $2$Werribee to Sunbury $-50$kmRolling stock:Sunbury to Craigiebum $-30$km$$ Option $1$Equivalent to London S Stock$$ Option $2"$E Class" light rail vehicleStopping arrangements:$$ Option $1$Major stops at Werribee, Sunbury and Crag Intermediate stops to be evenly distributed bspacing of no more than $10$km between an$$ Option $2$Major stops at Werribee, Sunbury and CragebIntermediate stops to be evenly spacing of no more than $5$km between any distributed bSpeed$/$Journey TimeOption $180$km$/$hr average speed between sto