If you see the sign of no u-turn in a dream, then it means you have made some decisions that cannot be changed as there is no way back. If you made a u-turn in a dream, then it shows you are making drastic turnovers in your life. Maybe the way you chose before doesnt make you happy, therefore you are willing to start everything from the start.
U-Turn dream meaning
Read more about dreaming of U-Turn in other dream meanings interpretations.