Driving your car, you arrive at a place where it is not possible to go forward so, despite being able to change direction or direction of travel, you . choose to go back, your behavior is correct < 3>
No, because I can change direction or direction of travel .
Yes, as long as you do not invade a railroad crossing and do not travel more than 15 meters in said march .
Yes, even if you enter a railroad crossing or travel more than 15 meters .