In Moscow, authorities are tightening the schedule around the forthcoming launch of the D4 system as part of an extensive upgrade to the city’s rail network. Officials from the Metropolitan Ministry of Transport have provided the details, explaining that the changes will go into effect from 23:50 on June 2 and will continue through 3:50 on June 5. The aim is to ensure that construction work proceeds with minimal disruption to daily travel while maintaining the safety and reliability that Muscovites rely on every day.
According to the briefing, the intervals between trains in the eastern radius of the diameter will be extended to roughly 30 to 40 minutes. This adjustment reflects the need to accommodate ongoing works at key nodes and to balance improved future service with current operational constraints. On June 3 and 4, several stations will be affected: Olgino, Kuchino, Saltykovskaya, and Nikolskoye will not be served in the direction toward the city, which will change the usual commuting patterns for residents and visitors who rely on these stops for their routine trips. Passengers are advised to plan ahead and consider alternate routes or modes of transport during these two days.
In addition, access to the section spanning from Reutov to Zheleznodorozhnaya will be limited for trains traveling toward Moscow. Trains destined for the capital will adhere to the primary corridor and follow the mainline route, rather than detouring through side tracks. Officials emphasize that the weekend timing has been selected to align with the lowest passenger volumes possible, aiming to minimize crowding and delays for travelers who do need to move through the impacted corridor. Transit operators will be on hand to provide updates and guidance as conditions evolve, and signage will be clear at affected stations.
Behind the scenes, the D4 initiative marks the birth of two entirely new rail corridors that will weave through the city center and connect multiple districts with greater speed and reliability. The work is part of a broader plan to reconstruct and modernize Moscow’s rail frame, integrating modern signaling, upgraded tracks, and improved interchange points to support a more resilient and efficient transit network for years to come. When complete, these lines are expected to offer shorter travel times for many routes, reduce congestion on older segments, and lay the groundwork for future service upgrades that will better serve residents, businesses, and visitors alike. The project represents a substantial strategic effort by city planners to elevate urban mobility and maintain Moscow’s status as a major east–west and north–south transit hub for the region.