The person who sees that he is walking on a dark street in his dream means that he will face some troubles and problems and will be in a very difficult situation. The dreamer will lose all hope and be very unhappy.
The person who sees that he is walking on a dark road in a dream is a pessimistic and sad person who has lost all hope. Due to a bad event he experienced, he still could not come to his senses and lost his belief in happiness.