Where do the various leads off of the wye go? Santa Fe had a wye at the Del Mar race track. There were no industries there, but it was the nearest place to turn around trains from San Diego. The Surf Line running from Los Angeles to San Diego came to a dead end at the San Diego passenger station. A train that arrived from Los Angeles would unload passengers in San Diego, then back down the five miles to Del Mar, turn on the wye, and back into San Diego. Then it would be ready to load passengers, and head back North. When AmTrak took over the Surf Line they continued that same practice for many years until the schedule got so busy that they had to go to the current push-pull system. The point being is that you don't necessarily need an industry at a wye if you have a reason down the track that would explain the need for a wye at that spot.