To dream of making a u-turn represents decision-making or the direction of your life that is reversing course. Changing the direction or path you are headed. Not liking the way a situation is turning out. A shape, sudden, or unexpected change in the direction your life is taking.
A U-turn may be a sign that you feel you made a wrong decision or oversight.
Example: A man dreamed of seeing a road on which no U-turns were allowed. In waking life he was feeling guilty about his religious faith because he had had sexual relations with his wife before he got married. The U-turn symbolism in this case may have reflected his feelings about having reversed his decision to stay a virgin before his marriage by “staying in the straight path of purity