Possums are nocturnal animals, so they are more active at night. Unfortunately, this means that they are also more likely to be hit by cars during the night. Possums have poor eyesight, so they may not see a car coming until it is too late. They also have a slow reaction time, so even if they do see a car coming, they may not be able to get out of the way in time.
There are several theories as to why possums run in front of cars. One theory is that they are attracted to the headlights of cars and mistake them for another source of light. Another theory is that possums are attracted to the heat emitted by cars and mistake it for a warm body or nesting spot. Whatever the reason, it is clear that possums running in front of cars is a dangerous situation for both the animal and the driver.