If the dream involves a car then you should endeavor to walk as much as possible, but use extra caution when you are approached by a vehicle. Take a different flight at least two days later if an airplane, watch out for WHATEVER is involved.
If the dream is about a sea accident and you do not plan to travel by ship or boat, then this is an omen having to do with love affairs.
If the accident involves an archaic, outdated, mode of travel then it will pertain to business reversals.
What Does Accident Mean In Dream?