Vincent Chan has sent through some more pics from his 'eye in the sky'.

The Park St pic shows the outbound gauntlet track opening up into the two options for 58s out of the city - Domain Rd or St Kilda Rd.

It also shows the inbound route if the tram driver has chosen Park St back at Anzac Station.

The ANZAC station pic shows the interchange station itself and the point at which the tram driver choose St Kilda Rd or Parks St as their next avenue.

Mal Rowe - who reckons if this was Sydney a few years back there would be a signal box