What are the traffic flows if nothing special is done on Cerrillos? Currently, the middle of Cerrillos is a 'fifth lane', one that can be used for left turns in either direction. In front of the main entrance, this means that there are cars in this lane coming from the E, waiting to enter the lot. At the same time, there are cars coming out of this entry, trying to turn W into this middle lane. These exiting cars, after contention with the cars trying to enter from the E, have to contend with cars coming from the E entering the middle lane as they try to turn left onto Gilmore. Clearly the situation in this middle lane will be confusing and lead to a number of accidents.

This leads to the next option: