To see an alley in your dream indicates a lack of viable solutions to a problem or concern. It may also mean that you find yourself at a crossroads and are unsure of which path to take or which decision to make. Responsibilities pertaining to your home life are causing you confusion.
To dream that you are walking through an alley implies that you have chosen the easy way to a destination or have walked down the wrong path towards a goal. It may also suggest that you will lose a revered status in some aspect of your life.
To make a U-turn during your dream indicates that you are changing a pathway in your life. You will change directions and go off on a new path. The U-turn may also denote that you may have made an incorrect alternative or selection.
When you see no U-turn signs in your dream, this may suggest that you cannot change what you already have done.