In a big city there is many bring and street below if the color of the path is always the same we can not know if we have to go up our stay below.I moist several times the right path because of it many time there is no sign.so if it changes color like green our purple we will know we have to get in the bridge right away
In a big city there is many bring and street below if the color of the path is always the same we can not know if we have to go up our stay below.I moist several times the right path because of it many time there is no sign.so if it changes color like green our purple we will know we have to get in the bridge right away