 However, this part of the route is usually signed as Toorak Road.After Warrigal Road, the highway widens to become a six lane dual carriageway, the median with trams tracks, carrying the Route 75 service to Vermont South.A few kilometres before Belgrave, the highway narrows again to a single carriageway, its route, number changing from State Route 26 to C412 until its end in Belgrave.