| 15.2.4.5.6. | On the passenger side only, the field of vision shall also be such that the driver can see a flat horizontal portion of the road along the side of the vehicle which is outside the field defined in paragraphs 15.2.4.5.1. to 15.2.4.5.4. above but within the field bounded by the following vertical planes; the front of this field of vision may be rounded off with a radius of 2,000 mm (see Figures 8c and 8d): | a0c0 |