Two metro staff members could be seen standing in front of the open carriage door to block passengers during the incident.

In short:

Footage has emerged of a moving Sydney Metro’s carriage door being left wide open during Wednesday morning’s commute.

The driverless metro service was running between Chatswood and Crows Nest about 8am.

What’s next?

The incident is now under investigation, with the Rail, Tram and Bus Union calling on Sydney Metro to stop operations until interim safety measures are implemented.

Video here (for those who don’t like giving Xitter the traffic): https://www.youtube.com/watch?v=1Wre_7nKyo8