its terminus in Belgrave. The route is long and is predominantly doubled tracked, however between Flinders Street station and Richmond, the track is widened to 12 tracks, narrowing to 4 tracks between Richmond and Burnley before narrowing to 3 tracks between Burnley and Box Hill. Finally, the line narrows to two tracks between Box Hill and Ferntree Gully before narrowing to a single track to its terminus. After Ferntree Gully passing loops and island platforms are present at Upper Ferntree Gully, Upwey, and Belgrave. After departing from its terminus at Flinders Street, the Belgrave line traverses both flat and hilly country with some curves (more towards the end of the line) and fairly minimal earthworks for most of the line. Sections of the line have been elevated or lowered into a cutting to eliminate level crossings. Despite some removals, there are a small number of level crossings still present with no current plans to remove them. The line follows the same alignment as the Alamein, Glen Waverley, and Lilydale lines with the four services splitting onto different routes at Burnley. The Alamein, Belgrave, and Lilydale services continue till the Alamein line splits off at Camberwell, with the two services continuing together till Ringwood. After departing Ringwood station, the Belgrave line heads south with the Lilydale line heading in an eastern direction. Almost all of the rail line goes through built-up suburbs, however, the rail line becomes peri-urban towards its terminus in Belgrave. Stations The line serves 31 stations across of track. The stations are a mix of elevated, lowered, underground, and ground level designs. Underground stations are present in the City Loop and Box Hill, with the majority of elevated and lowered stations being constructed as part of level crossing removals. Infrastructure Rolling stock The Belgrave line uses X'Trapolis 100 electric multiple unit (EMU) trains operating in a two three-car configuration, with three doors per side on each carriage and can accommodate of up to 432 seated passengers in each six car configuration. The trains were originally built between 2002 and 2004 as well as between 2009 and 2020 with a total of 212 three-car sets constructed. The trains are shared with 7 other metropolitan train lines and have been in service since 2003. Alongside the passenger trains, Belgrave line tracks and equipment are maintained by a fleet of engineering trains. The four types of engineering trains are: the shunting