It means you have to access a different road and try to remove the obstacles. If you cross a street, the barrier is social. If we find a traffic light, it symbolizes civilized norms of coexistence. If you see the green traffic light, then it indicates that you have to start making changes now. The red traffic light red indicates that we should wait until some of the circumstances will change. If we cross the obstacle in open field, it will be internal order. If we cross a river and the obstacle is water, then it symbolizes your feelings and emotions.
Read more about dreaming of Crossing in other dream meanings interpretations.