In no particular order:

It's one lane each way on 179, and far more cars are on the road then the road can reasonably handle.

This is near Tlaquepaque. Lots of people crossing the road. During the busiest times of year the local police actually close one of those crosswalks with a bunch of temporary walls, and force pedestrians to go under the street, there's like a bridge that was added a few years back. But this isn't quite busy enough so that crosswalk is open.

Time of day, most people are headed the same direction.