Moscow has reached another major milestone in its ongoing transformation of urban mobility. The city already operates one of the world’s largest tram networks, spanning 418 kilometres, and on what officials describe as a historic day, the Russian capital inaugurated its first Moscow Tram Diameter (MTD) — T1. The new cross-city line introduces a next-generation, high-capacity, surface-level rapid transit concept to Moscow’s expanding urban transport system.
The newly launched MTD T1 extends over 27 km, linking Universitet metro station in the southwest with Metrogorodok in the east. The line provides a fast, direct and high-frequency surface connection across 13 districts, reducing journey times and relieving pressure on parallel metro corridors.
Conceptually, the Tram Diameters function as surface metro lines, designed to offer metro-like performance while integrating into the urban streetscape. With the new service, residents gain shorter and more predictable travel times compared to existing underground connections.
Foundation of a New Network Concept
The opening of T1 was made possible by the completion of a new tram corridor along Akademika Sakharova Avenueand Masha Poryvaeva Street. This strategic link provided the backbone for establishing the first cross-city tram diameter, connecting:
- 4 railway terminals, and
- 24 stops integrated into Moscow’s wider rail-based transport system.
The MTD concept is built around surface street-level light rail standards, emphasizing short headways, dense stop spacing and seamless multimodal connectivity.
Key operational features include:
- 64 stops, spaced 300–400 metres apart, ensuring high accessibility along the entire corridor.
- 6-minute minimum headway on T1, supporting metro-like service frequencies.
- On overlapping sections with existing routes 13 and 39, combined headways will drop to 4 minutes, significantly increasing capacity.
The new corridor will also introduce the city’s first 50 “L’vyonok-Moscow” tramsequipped with autonomous operation capability, enabling improved operational resilience and flexibility. The Lvyonok-Moskva vehicles of type 71-911EM are four-axle low-floor vehicles from PC Transport Systems (PC TS).
Looking Ahead: Expansion to Continue in 2025
The city is already preparing to expand the Tram Diameter network. The second line, MTD T2, is scheduled to open in spring. Covering 33 km, it will connect Chertanovskaya metro station in the south with Novogireevo station on MCD-4 in the east.
Once operational, T2 is expected to enhance mobility for more than one million residents, further highlighting the strategic ambition behind Moscow’s investment in modern surface rail systems.
A New Chapter for Surface Rail in Moscow
With MTD T1 now in service, Moscow positions itself among the global cities that are redefining the role of trams as a high-performance, high-capacity urban rail mode. The Tram Diameters mark a shift toward integrated, cross-city surface corridors that blend the accessibility of light rail with the operational philosophy of metro systems — a concept that may inspire similar developments in other metropolitan regions.
We reported about the light rail and tramway expansion plans here:
