By Diego Giuliani

Published on

30/05/2026 - 15:54 GMT+2

Autonomous heavy machinery and drones are joining forces to cut emissions and enhance safety in tunnel construction, thanks to a Spanish-led EU initiative.

With the construction industry responsible for nearly 40% of global energy-related CO2 emissions, the carbon footprint of the materials and processes in a single major tunnel project can equal the emissions of hundreds of thousands of intercontinental flights.