every intersection is unique. on some I take the lane. on some I'm between the lane turning left and the lane turning right. sometimes I jumo through the intersection while everyone has a red just before my lane gets the green making sure it is safe. sometimes I let the lead car know I'm waiting for them by looking over and down at their right front wheel.
this is commando on the job training. it doesn't take long for you to learn what to do at each intersection. if you're ever unsure then wait and try to follow a car through the intersection.