You shouldn't be in the middle of the lane at an intersection, you should be in the tyre print of the cages, with your eyes peeled from anything they've dropped there for you.
As far as I am concerned you should never be in the middle of the lane at anytime. When on a 2 lane road I am in the left side of my lane and as close to the center line as I can get. When on a 4 lane road or highway I do the same when in the right lane. When in the left lane I am on the right side as close to the right lane as I can get.
In these positions you have a much better lines of sight, can be seen better, easier movement between lanes and will have more room in case you have to perform emergency avoidance.