Yield for Reindeer
Here in the United States, we have street signs that warn us about regular deer. In Sweden, their street signs warn motorists about passing reindeer. Crashing into a reindeer is just as dangerous, if not more so since male reindeer (bulls) are unpredictable and may lash out.
So, when a herd of the Christmas-y beasts crosses the road, you better turn your hazard lights on and wait until the last straggler passes. You don’t want to have your car totally demolished by Rudolph and his gang, do you? However, that would be a pretty funny story to tell when you get back home.