The game is played in a 3d environment and your goal is to get to other side without falling. The game is 3d so you need to look left and right before jumping. There are other ways to get to the other side than jumping. Some of the roads are hard to notice since they are thin and can only be seen when you look for it.
Another way to get to the other side is through jumping, but this should be your last option since the clip is very high and the game will end as soon as you fall.