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93 3. Please describe every instance in which you allow a grace the passenger's perspective (i.e., what measure is best at period (e.g., at schedule transitions, during incidents, for representing impacts on your system's passengers)? late trains), the duration of each grace period, and its 13. How does your system affect overall airport perfor- effect on calculation of performance measures such as mance? In response to this question, please consider the system availability. Please attach, upload, or send material following: as necessary to explain this answer. A. Is your system the only form of transportation from 4. Please describe the instances in which you allow credit which passengers can choose, or is an alternative for partial service, including how it is calculated and form/mode of transportation available while your its associated definitions, rules, and formulas. Please system is operating (such as walking, automobiles/ attach, upload, or send material as necessary to explain taxis, buses)? this answer. B. How disruptive to airport performance is it when 5. What performance measure(s) do you use to judge sub- your system is unavailable? For example, would the system and/or component performance? Please describe airport continue to perform fairly well during a each measure, including their names, how they are calcu- shutdown because passengers can get to areas served lated, and their associated definitions, rules, and formulas. by your system by other means (such as walking), or Please attach, upload, or append material as necessary to would the loss of your system have a major adverse explain this answer. impact on airport performance (because buses would 6. What safety-related performance measure(s) do you track? have to be called in, for example)? Please describe Please attach, upload, or append material as necessary to if such an outage affects only part of the airport explain this answer. (e.g., one concourse) or if it affects the entire airport 7. What security-related performance measure(s) do you (e.g., all terminals, parking facilities, rental cars). track? Please attach, upload, or append material as neces- 14. What operating strategies do you employ to improve the sary to explain this answer. performance of your system? 8. What performance measure(s) do you use to judge 15. What equipment capabilities or configurations that do efficiency and/or effectiveness in general, and in par- not exist in your system today would improve its perfor- ticular, the economic efficiency and/or effectiveness at mance if they were implemented? Please describe how your system? Please describe each measure, including these would improve performance. their names, how they are calculated, and their asso- ciated definitions, rules, and formulas. Please attach, 5.1.3 Section 3: Data Collection upload, or append material as necessary to explain this answer. 1. What methods do you use to collect and report data for 9. What performance measure(s) do you use to judge the the performance measures provided previously? Please passenger experience at your system? Please describe each attach, upload, or send any procedures that may describe measure, including their names, how they are calculated, collection and reporting of data at your system. their associated definitions, rules, and formulas, and the 2. Please attach, upload, or append examples of the daily, frequency of collection from passengers. Please attach, monthly, and annual data collection forms and reports upload, or append material as necessary to explain this that you currently use. answer. 3. Please provide quantitative data that describes the per- 10. What other performance measure(s) is in use at your formance of your system in 2007, using the performance system that you have not already provided? Please measures you have described previously. Please attach, describe each measure, including their names, how they upload, or append material as necessary to explain this are calculated, and their associated definitions, rules, and answer. formulas. Please attach, upload, or append material as necessary to explain this answer. 5.1.4Section 4: Suggestions for Improving 11. What data do you collect (that is not already collected APM Performance Measures for the measures you have provided previously) that could be used as a performance measure? Please append material 1. Please provide any plans you may have regarding ways to as necessary to explain this answer. improve your own data collection and performance mea- 12. Which of the measures that you have provided previ- suring process. Please attach, upload, or append material ously best represents your system's performance from as necessary to explain this answer.