This graph shows a hypothetical demand curve for facility "k." The x axis is labeled "Number of Facility k Uses Per Period" and the y axis is labeled "Generalized Facility k Access and Use Cost." The demand curve for facility k slopes downward from left to right. The graph shows that when the time it takes to access facility k goes down from point P0 to P1 on the y axis due to accessibility improvements from the proposed regulations, then the number of uses by persons with disabilities increases from point Q0 to Q1 on the x axis. The result is an increase in user benefits. Total user benefits are depicted as a shaded rectangular area under the demand curve bordered by the points [P0 a b P1], where point a on the demand curve is located at the intersection of P0 and Q0, and point b on the demand curve is the located at the intersection of P1 and Q1.