The link says "drivers should not stop in a 'no stopping zone' because they may interfere with other vehicles that are turning from one roadway to another. This is usually where large vehicles need extra room to turn."
Is the link suggesting that there is no need to stop before reaching the crosswalk lines? But isn't it dangerous for the pedestrians in this case?
I have attached an image in that link to clarify my question.
Both rules apply. You must as always stop before the crosswalk, and additionally you must not stop inside the no stopping zone. Therefore, in order to comply with both, you have to stop behind the no stopping zone.
Another way to look at it is that it is equivalent to having a stop line that is further back from the intersection than usual. The large X in between just provides a visual indication that this is the stop line for the intersection and that you should not go past it until you have the right of way to proceed.
In this aerial photo of 2 St SW and 17 Ave SW in Calgary, you can see that the back line of the no stopping zone is wider, apparently the same width as the stop line in the adjacent lane, which is another signal that the back line serves as a stop line.
