The T4 Line is electrified in 25 kV and uses classic tracks like the national railway system instead of urban tram flange rails, which are flat tracks built into recesses in a road or greenspace. Instead, it has low platforms and its trains travel on the right. Like tramways, the line uses multi-aspect signalling, and crossings are equipped with traffic lights. Thus tram-trains exceed the capabilities of vehicles that can only travel on the national railway system or on urban tramway lines.