It seems that this is a teenager's dream, and many young people have dreams of acrophobia.
Dreams are generally puns. In addition to growing fear, this dream also contains some anxiety. Let's see what it is.
Elevated overpass, a high-goal link, can also be understood as a way to realize your ideal. Broken bridge fully expresses the dreamer's inner anxiety: what if the ideal in his heart can't be reached!
The dream scene of cars falling down one after another has a deeper meaning besides highlighting the fear that the goal is difficult to achieve.
A car refers to a family in many cases. You see, even the seats inside are for family members. In this dream, cars fell one after another. Is this a metaphor for the crisis of your family (parents)? I can also see my hatred for them.
What kind of ideal goals will young people have? I guess you won't take the college entrance examination soon? Next year?