Shenzhen Metro's GoA4 Driverless Lines (20 & 14)
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Two Shenzhen lines have run with nobody aboard since opening — and unlike Osaka, Washington D.C. or Busan, where 'driverless from day one' meant staff rode along for years, TÜV Nord certified the claim.
what does this mean?
The strongest source is an independent non-academic evaluation: an audit office, a government or EU review, or an NGO. It grades who did the looking — not how well the project went. All four grades →Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 10 more in Shenzhen · 🚌 Public transport guide · 🚲 Mobility projects
Shenzhen Metro's Line 20 (opened December 2021, 8.4km) and Line 14 (October 2022, 50km) run at GoA4 — unattended, no driver or attendant onboard — independently certified by TÜV Nord against EN 50126/50128/50129 signalling and safety standards. Both have operated driverless since day one, with no reported rollback to staffed operation.
🎓 Lesson
Unlike Osaka, Washington D.C. or Busan, where 'driverless since day one' turned out to mean staff rode along for years, Shenzhen's GoA4 claim was checked by an outside certifier (TÜV Nord) rather than taken on the operator's word alone.
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1001 Smart Cities (2026). “Shenzhen Metro's GoA4 Driverless Lines (20 & 14)” — Shenzhen, China. The Smart City Atlas. https://1001smartcities.org/projects/shenzhen-goa4-driverless-lines/ (last verified 2026-07-31). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.