I have a set of tram tracks here that I have to deal with on occasion which are similar to these (in reverse), and I always go with the head into the middle of the road, and then turn to cross at 90 degrees across both. It’s interesting, as I go to one uni campus, and most students go up on the right and take the turning to the bike park (also on the right), which has a lip, on a narrow angle. I keep waiting to watch them fall.
PS: I liked the two riders who cross together, and the first bangs into the second which keeps him upright.
"The Knoxville crossing is particularly tricky, due to the angle that riders must approach the tracks. The researchers often filmed riders trying to cross at a perilous 10 degrees. If cyclists swooped and sharply turned, they could cross at a safer 45 degrees. If they rode straight through they had a bigger risk of hitting the dust, especially if they were female or riding in a group. Cherry suspects the latter cyclists might be pedaling side-by-side, thus limiting their ability to maneuver across the track, or perhaps chatting among themselves to distraction. As for the gender factor, it could be related to experience, he guesses, or a “torque that occurs in the handlebars that maybe a guy could overcome with more upper-body strength.”
"So what’s the magic angle to bike across railroad tracks? After reviewing both successful and unsuccessful crossings in their bone-bruising footage, the researchers concluded the famed 90 degrees isn’t necessary—a lesser “bronze standard” of 60 degrees is still extremely effective."