2002The Delhi Metro is one of the largest metro networks.

🤯 Verified Fact · Transport

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Opened in 2002, it has grown to over 390 km of track.

Source: en.wikipedia.org

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Transport<span class="aj-year">1868</span>The first traffic light exploded.TransportAirplane windows are round for safety.Transport<span class="aj-year">1881</span>The Darjeeling toy train is a UNESCO site.
🔬 Verified Citation:en.wikipedia.org ↗