Saisi × Nanning–Yulin Railway | Saisi Time Servers Secure the Safe and Efficient Operation

As a 350 km/h high-speed railway fully invested and constructed by Guangxi, the Nanning–Yulin Railway crosses karst landforms, with a bridge-tunnel ratio of over 80% across the entire line. The complex geological conditions and high-speed operation scenarios bring dual challenges to time synchronization products.

In the harsh environment of karst terrain and dense tunnel groups, satellite signals are easily blocked, causing traditional clock systems to fail in delivering stable, high-precision time service. Meanwhile, trains traveling at 350 km/h cover nearly 100 meters per second. A mere 1-second time offset in train dispatching, signaling and power supply systems may directly lead to line-wide scheduling disorder and threaten railway operation safety.

Meeting the stringent time synchronization requirements of the Nanning–Yulin Railway, Saisi time servers feature nanosecond-level synchronization accuracy (one billionth of a second) and holdover performance better than ±0.5μs@1day. They build a full-coverage smart time network for the railway, fully guaranteeing the efficient operation of all trains.

The Saisi time servers deployed on the Nanning–Yulin Railway adopt digital phase-locked loop technology and independent FPGA-based holdover algorithms. As professional time synchronization devices, they deliver high-precision, highly reliable time and frequency reference signals for rail transit systems. Fully certified by multiple authoritative institutions, the products boast excellent environmental adaptability.

As Nanning–Yulin high-speed trains travel through the urban clusters of southeastern Guangxi at 350 km/h, Saisi time servers silently safeguard the safe operation of every train.

With rail transit advancing rapidly toward intelligence and networking, the time service system has evolved from the time hub of rail lines into a core neural node of the smart transportation network.

Empowering the 350 km/h Nanning–Yulin High-Speed Railway, Saisi time servers inject nanosecond-level clock heartbeat into the project, marking another milestone for Saisi in the rail transit industry.

On the global stage, Saisi clock systems have been widely applied in numerous world-class rail transit megaprojects: from Mexico Metro Line 1 (one of the world’s top 10 classic PPP cases) and Ethiopia-Djibouti Railway (Africa’s first electrified railway), to the Jakarta-Bandung High-Speed Railway (a landmark high-speed rail project in Southeast Asia). With professional time synchronization technology, Saisi keeps raising the precision standard for global smart transportation.

Looking ahead, Saisi will drive the digital upgrading of rail transit with steady clock heartbeat. Expanding from equipment-level time service to systematic collaboration, and from domestic benchmarks to global layout, Saisi will continue to deliver higher-precision, more stable and reliable products and solutions, empowering the rail transit industry to achieve deeper digital and intelligent transformation.