On game days, most Utah fans arrive at the stadium by taking Trax for at least one leg of their journey. Trax runs extra full length trains on game day for obvious reasons. They run a red line train from Draper even to accommodate the massive game day crowds. Here is where it gets fun (for some):

Despite the extra effort, it can be somewhat challenging to get on a red line train if you are cutting too close to kickoff and/or try to board north of Sandy. The trains fill up quick. With an excess # of BYU fans presumably heading from Utah County, The Draper trains may fill up even quicker than normal. It would be quite amusing to see platforms in Midvale, Millcreek and downtown full of Utah fans waiting hopelessly to board as trains full of BYU blue keep rolling through.

I have been to RES games against opponents not named BYU where the train I am on is completely full by Sandy, and the rest of the journey consists of passing platform after platform of agitated Utes that have to keep waiting until a train with some breathing room comes by. I have heard horror stories of people waiting at the courthouse for 45 minutes before abandoning ship and calling an uber.