The drawing at the top left shows the overall clearance required by a customer and shopping cart to be about 42 in, or 106.7 cm. The clearance requierd to accommodate a man and woman abreast is illustrated in the drawing at top right and shown to be 60 in, or 52.4 cm. To allow for a small child, an additional 18 in, or 45.7 cm, should be added. Maximum body breadth is the key body measurement to consider anthropometrically.