I apologize to all of you who have 800x600 resolutions; I just couldn't fit the whole animation into that space. Your computer may have compressed the space between the two leftmost signals; there should be enough space for twin train tracks between them. If that space hasn't been compressed, those two signals are identical, so you can scroll right to hide the leftmost one without missing anything.
10 Street is the major road entering downtown from the northwest; as it crosses the Bow River and enters the downtown core it becomes a one-way and is renamed 9 Street, and the intersection with 5 Avenue is the first that allows commuters to turn towards the centre of downtown. This would be an ordinary downtown signal except for one thing: the northwest C-Train (Calgary's LRT) line runs parallel to 9 St, so left-turning traffic needs to be stopped while a train is passing. Of the signals you see here, all are 3M PV signals; the two to the left of the railway crossing signal control the C-Train lines (the train does not have priority over street traffic in the downtown core) and have backplates marked C-TRAIN ONLY, while the assembly to the right is over the road and each signal is directed towards a single lane. When the railway crossing control is activated, there is a gate that lowers to extend over the 2 left lanes. Note that there is a pedestrian crossing on the left side of the road, and so the left turn signals do not have green arrows.
Another point of note about this intersection is that the movement sign for the 3rd lane is a Varicom variable sign (the kind with the flaps that fold inwards or outwards to display the appropriate sign. During the morning rush hour when a lot of traffic is moving towards downtown the 3rd lane changes to become another left turn lane, and the traffic light associated with that lane changes its behavior accordingly. The animation above is the usual operation, while the one below is for the morning rush. Both animations are designed to alternate between no train and when there is a train present.

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