You're sure the points down from sunshine p3/4 are 40km/h? That seems odd considering there will be express trains running through as well as stoppers... O_o
Sadly yes only 40 kmh points initially . As explained previously this is only an interim layout at the Down end of Sunshine and also at Robinsons Rd Deer Park West.
To save money they only put in points initially that will be used in the final layout when the Melton electrification and duplication occurs.
IIRC from concept plans originally put up on DOT website but since removed :
Taking Sunshine first that then gets completely changed at Down end as the Metro track pair will split into electric tracks to Sunbury & electric tracks to Melton . The RRL track pair through 3/4 then gets relaid as straight move towards Ardeer and the RRL move towards Bendigo is on flyover and becomes the diverging move.
Two extra electrified Metro tracks go on the north side of the RRL track pair from Sunshine to Robinsons Rd . From Robinsons Rd to Melton the existing line gets duplicated and electrified (and shared by VLP and Metro out as far as Melton.)
Robinsons Rd Junction for RRL basically gets recast for RRL like on the Down approaching Robinsons Rd Ballarat Line leaves Dn RRL line on Down side by 65 kmh turnout and then passes over both Up and Down RRL Manor North Junction lines and then comes to ground and joins into the Down Metro line towards Melton . Two centre tracks RRL swing in from Manor North as something like 100kmh curve. Up Ballarat line leaves Up Metro line on Down side of junction and joins into the Up RRL line at grade via a 65kmh turnout . So from the South side through Robinsons Rd 6 tracks Down RRL Ballarat, Down RRL Manor West, Up RRL Manor West, Up RRL Ballarat, Dn Melton Metro, Up Melton Metro . The two 65kmh turnouts used in the initial layout at Robinsons Rd get re-used in the final layout .