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105 100.50% 100.00% 99.50% 99.00% 98.50% 98.00% 97.50% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Airport APM System ID Figure A-9. Airport APM systems availability values. Passenger-experience performance measures appeared to formance measures and data collection in that effort. The be in large part tracked according to passenger complaints suggestions included: and/or comments for both the airport APM and non-airport APM survey participants. Use nonproprietary systems for data collection; Standardize training and certification of personnel work- 5.2.5 Data Collection ing in airport APM systems; Improve availability calculation since it is too vague; The collection of data for airport APM system survey Improve communication with passengers; participants is largely accomplished automatically using Improve definitions of "fully functioning vehicle" and data received via supervisory control and data acquisition when a door is "available"; (SCADA) and control center computer system equipment. Improve the user interface for the proprietary reporting tool; Manual collection of data is typically involved when passen- Improve fault tracking database; ger surveys and counts are required or when data not collected Incorporate automatic passenger counting systems into automatically by the system, such as narrative descriptions of stations during initial construction of the system; incidents, need to be entered for reporting purposes. Ensure automatic passenger counting is reported directly The reported quantitative availability performance data to control center; for the airport APM survey participants are reported in Use on-time performance to measure overall performance Figure A-9. The same data for the non-airport APM survey and reserve availability to refer to the fleet; participants were provided by two of the four participants Have all airport APM systems use service availability and and reported at 92% and 99%. the same formula [MTBF/(MTBF+MTTR)]; Use fleet, mode, and station door availability, as well as 5.2.6Suggestions for Improving Airport duration and number of downtime events to measure APM Performance Measures performance; Both airport and non-airport APM survey participants Use a train control software package in the industry that provided suggestions on how to improve airport APM per- creates performance data automatically.