3.3   Vehicle Overhangs
   A.   Parking spaces may be designed so that the front of a vehicle overhangs into planter areas that are within a vehicular use area but cannot overhang into the street landscape border.
   B.   When planted within the vehicular use area, trees must be located at the edge and between vehicle spaces, such as the common corner of four perpendicular spaces that face each other (see Figure 5-B, Vehicle Use Area). The minimum required vehicle overhang is three feet with the following exception. When the tree is located at the common corner of four perpendicular parking spaces that face each other, the minimum required overhang is two and one-half feet (2'-6"). The vehicle overhang is measured from the front of the wheel stop to the centerline of the tree.
   C.   Only trees with single trunks may be planted within these planters because trees with multiple trunks need wider areas of growth and may interfere with the parked vehicles.