Drawing on his career leading Guangzhou Metro's expansion to 780 kilometers across 19 lines, Cai Changjun holds seats on SMRT's Technical Advisory Panel and an LTA advisory board. A central element of this partnership is the testing and adaptation of Suiteng OS, a smartphone-like modular rail operating system developed under his leadership. The software is being evaluated at the Bishan Depot rail innovation laboratory to allow system updates without full hardware replacements. Cai holds 36 invention patents and emphasizes building adaptable railway systems that readily respond to evolving passenger habits.
Key points
Modular operating systems like Suiteng OS allow rail networks to upgrade software without…: Modular operating systems like Suiteng OS allow rail networks to upgrade software without replacing entire hardware setups.
Cai Changjun brings insights derived from 36 invention patents and Guangzhou Metro's mass…: Cai Changjun brings insights derived from 36 invention patents and Guangzhou Metro's massive expansion across 780 kilometers of track.
The cross-border partnership aims to make Singapore's MRT network significantly more flex…: The cross-border partnership aims to make Singapore's MRT network significantly more flexible, reliable, and easier to maintain.
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Branded Content
He helped grow Guangzhou Metro. Now he’s lending his expertise in S’pore
This rail industry veteran came to Singapore in the early 2000s to study its trains. Today, he sits on two public transport advisory panels here, and says the learning still goes both ways
Kareyst Lin, Brand Newsroom
In 2013, a diagnostic computer at Guangzhou Metro broke down. It was worth tens of thousands of yuan. The quote to replace it: 1 million yuan (S$192,300).
The machine contained software for checking the on-board signalling systems of 21 trains. Back then, suppliers often sold the device and its software only as a bundle.
Guangzhou Metro did not pay. Instead, that episode – a “painful experience” – pushed Cai Changjun, then the general manager of its operations division, to develop creative solutions.
One of them, Suiteng OS, is being adapted and tested in Singapore at the SMRT-Guangzhou Metro Rail Innovation Laboratory, launched at Bishan Depot on June 3, 2026.
Suiteng OS was first deployed at Guangzhou Metro in September 2019. It is a rail operating system that can be…
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