Yes, driverless trains (specifically Grade of Automation 4, or GoA4) are extremely common in 2026 and have been for decades in many cities. The Paris Métro (Lines 1, 4, and 14), the London Docklands Light Railway (DLR), and the Vancouver SkyTrain are world-famous examples of fully automated systems where no staff member is present in the cab. In Asia, cities like Singapore, Tokyo, and Shanghai operate massive driverless networks. In 2026, we are also seeing the expansion of "unattended" operations to long-distance freight; Australia's Rio Tinto AutoHaul network operates heavy-haul freight trains over hundreds of miles without a driver. The transition to driverless technology is driven by increased frequency (trains can run closer together), improved safety (removing human error), and operational efficiency, with modern 5G-based signaling systems allowing for real-time adjustments to train speed and spacing.