This section is from the book "How To Intepret Your Dreams", by An Unknown Author.
To dream that you are in an accident signifies pent up guilt and you are sub-consciously punishing yourself over it.
To dream of a car accident symbolizes your emotional state. You may be harboring deep anxieties and fears. Are you "driving" yourself too hard? This dream may tell you to slow down before you hit disaster. You need to rethink or re-plan your course of actions and set yourself on a better path.
To dream that a loved one dies in an accident indicates that something in your own Self that is no longer functional and is "dead". It is also symbolic of your own relationship with that person. Perhaps you need to let go of this relationship.
Accident dreams may also represent your straightforward fears of being an actual, physical accident. You may be simply nervous about getting behind the wheel. This dream may be a clear warning to cautious of approaching vehicles.
This is only a general partial list - of course. Every single detail in your dream could have some hidden meaning. There are a lot of places online to find information about the specific details of your dreams and what they might mean.
You need to discover the link between all these images and what they might mean. This process is a bit like those "connect the dots" puzzles that reveal a hidden picture.
Psychologically, you simply need to understand what this net of associations from the dream is telling you specifically, at this precise time of your life, about your current problems and conflicts.
Quite often, these associations are purely emotional; that is, you can take a particularly graphic dream image, examine your emotional reactions to it, look back into your past for times when you felt the same emotions, and then ask yourself in what way those situations from the past have any bearing on what is happening in your life now.
Repetitive dreams indicate that you are continuing to miss the point about the meaning of the dream. If you don't "wake up" to the unconscious meaning of the dream but instead persist in seeing it through your own wish-fulfillment needs, you will remain stuck in your own self-deception.
Almost everyone has experienced a nightmare at one point or time in their life.