Case Study: Grand Paris Express improves underground worker safety with Pole Star Indoor Positioning

Grand Paris Express enables worker location across 4 metro lines with Pole Star Indoor Positioning

The Grand Paris Express programme faced a significant challenge in ensuring the safety of its workers constructing four new metro lines. Teams operating in GPS-deprived environments like tunnels and underground stations lacked reliable location tracking, which was critical for protecting isolated workers and managing alerts. To address this, they partnered with vendor Pole Star Indoor Positioning for a multi-technology worker location service.

Pole Star implemented a solution that runs on the professional mobile devices workers already carried, requiring no new hardware. Their service used a combination of LTE and BLE signals to provide continuous, accurate location data without any reliance on GNSS. This gave Grand Paris Express real-time visibility on every worker across all critical areas, enabling geolocated alerts for faster incident response and enhanced coordination with emergency services, thereby significantly improving worker safety.

Grand Paris Express