To dream of being in this event is a feeling of not only a dramatic negative change in your life, but also to everyone around you as well as your envorment.
A very negative symbol and should be meditated upon.
To dream of witnessing this event is symbolic of feelings of helplessness in the face of a great tragedy. In prohetic dreams this heralds a great change in the distant future (planes are associated with great distance). This change may not be negative.... Encyclopedia of Dreams
A dream of a car crash represents tensions about your efforts to ‘get somewhere’ or achieve your goals. You could be driving yourself too hard, or perhaps you are too eager to get ahead.
If your car suddenly spins out of control and crashes into pedestrians, your unconscious may be alerting you to the need to have your steering and brakes checked. Alternatively, your unconscious may have been commenting anxiously on the way you are living your life. Are you in danger of losing control, coming to the end of the road, or have you set yourself on a collision course because of your life in the fast lane? If so, pay attention to who you hit in the dream and who was affected by the accident. For men, driving cars tends to relate to sex, so it could be some kind of warning. Perhaps you are being careless or casual in protecting yourself.... The Element Encyclopedia
Psychological / emotional perspective: A crash as in a collision suggests a traumatic occurrence, perhaps by not paying attention to detail. Crashing out would suggest losing a hold on reality.... Dream Meanings of Versatile
Dreams about being in a car or motorcycle crash mean your beliefs or lifestyle are clashing with someone else’s. It may also represent a recent shocking situation you were involved with. Dreams about airplane crashes mean you have set unrealistic goals for yourself.... My Dream Interpretation
Whatever its origin or cause, a crash in your dream heralds an important achievement, and the louder or bigger the crash the more noteworthy will be the accomplishment.... The Complete Guide to Interpreting Your Dreams
(1) If in your dream you crash - in a car or train or aeroplane - this probably signifies that you are in a state of anxiety over some undertaking or situation.
(2) If you are driving, the crash may symbolize an unconscious desire to punish yourself. What guilt-feelings are you harbouring? Guilt and sado-masochism often go hand in hand. Dissolve the guilt-fee lings (which are almost certainly irrational and which, anyway, can contribute nothing of value to life - your own or anyone else’s), and the violence will dissolve, too.
(3) The crash may express a (hidden) fear of mental breakdown, in which case you ought to seek help.... A Dictionary of Dream Symbols
If you are involved in (or die) in a train, bus, car, bike or airplane accident in your dream, whether or not you were driving the vehicle that crashed is significant.
If you were not driving, the dream may be urging you to take control of your life; if you were driving, the dream is urging you to alter your course or change your plans in waking life to avert disaster.
If you dreamed that you were in a ship and the water was coming overboard and submerging you, the traditional association of water with emotion suggests that you are being overwhelmed by emotion.
If this is the case, the dream is urging you to try a more logical and rational approach to your problems.
If you were attempting to save other people in your shipwreck, think about what, or who, they may represent in waking life.
If it was a child, it may represent a part of yourself you are trying to develop that might act as a counterbalance to your powerful emotions. Dreams about a shipwreck can be associated with your life course, or work life. The dream is suggesting that something going on in your present life experience may be making you feel isolated, abandoned, or on the verge of some kind of a catastrophe or tragedy.
Those who have this kind of dream are often going through a transitional period in their lives, such as a graduation or engagement. The ship therefore represents your goal, but the journey has become out of control and the horror of being dragged down by the ship captures a sense of the horror of being dragged down by traditions and expectations. This kind of dream isn’t a prediction of failure in your relationship or career; it simply indicates that details surrounding it are threatening to obscure the happiness and satisfaction you are hoping for. See also ACCIDENTS, ACTION AND ADVENTURES.... The Element Encyclopedia
Dreams of plane crashes are typically provoked by worries about over- extending yourself, such as a project or business collapsing, or not being able to pay bills. It is likely that you may be afraid of failing in some other way, especially if you are about to take an exam or test, or have set yourself an unrealistic task or objective. Have you been flying too high? See also DISASTERS.... The Element Encyclopedia
A dream of a train crash could suggest the need for extreme caution concerning financial matters. It could also indicate an exaggerated sense of self-worth as a stumbling block in the dreamer’s path.... The Element Encyclopedia