PKP LHS, the Polish operator of Europe's longest broad-gauge line, plans to buy 12 new diesel locomotives for 1,520 mm track. The order targets the roughly 400 km route from Hrubieszów to Sławków Południowy, the freight corridor that links Poland's standard-gauge network with Ukraine's broad-gauge system.

The plan, reported by RAILMARKET.com, signals a fleet renewal rather than an expansion: the operator's existing broad-gauge locomotives are Soviet-era hardware, and replacing them bears directly on reliability, haulage capacity and maintenance cost on a line that has gained strategic weight since the war in Ukraine pushed more traffic onto rail.

What does the order change for operators?

For practitioners, three things matter in a diesel order like this. First, availability — new builds mean fewer failures on a corridor where rescue operations are complicated by the gauge break. Second, tractive effort: modern diesels typically haul heavier tonnage at lower fuel burn, which cuts the cost per train on metallurgical and bulk traffic, the line's traditional bread and butter. Third, standardisation — a dozen units from one supplier consolidates spares and training.

PKP LHS has not yet named a supplier, a delivery date or a contract value. Until it publishes tender documents, the 12-unit figure stands as an intention, not an order — and recent European diesel procurements suggest lead times of two to four years from award to first delivery.

Why the broad-gauge line matters

The Hrubieszów–Sławków line, built to Soviet gauge in the 1970s to serve the Upper Silesian industrial belt with Ukrainian iron ore, remains the only broad-gauge route of its scale west of the Polish-Ukrainian border. It lets Ukrainian-gauge trains run deep into Poland without transshipment, saving a full reload at the border. That advantage has grown since 2022, when both military aid flows and diverted commercial cargo pushed up demand for direct-gauge capacity into the EU.

For Ukrainian Railways (UZ) and forwarders moving grain, ore and steel, more dependable PKP LHS traction translates into predictable pathing on the Polish side. For Polish ports and steelworks at the line's western end, it secures inbound bulk capacity.

What happens next

The procurement now moves to tender. Watch for three markers: whether PKP LHS specifies new-build or refurbished units, whether the contract includes maintenance, and how the timeline lands against EU funding cycles for military-mobility and Ukraine-corridor projects.