“Average vehicle ridership” (AVR) means the figure derived by dividing the number of employees (including those telecommuting) at a regulated work site who commute to and from work between six a.m. to nine a.m. Monday through Friday, by the number of vehicles driven by these employees between home and the work site over that five-day period. The methodology for calculating AVR is contained in Appendix 2, set out at the end of this title. (Ord. 93-5 § 1, 1993)