1. Presented to: By: Date: Federal Aviation Administration Development of Occupational Testing for Air Traffic Control Color Vision AVS Managers Tom Chidester, Ph.D., Manager AAM-500 August 11, 2009

2. 2 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 2 CVD Perception of Color Deuteranopia Protanopia (Pictures generated by an on-line CVD simulators: www.vischeck.com) Tritanopia

3. 3 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 3 Severe Protanopia – Old Technology

4. 4 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 4 Severe Protanopia – Current Displays

5. 5 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 5 Critical Functions Using Color

6. 6 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 6 Terminal ACD Enroute DSR Terminal STARS Highlight (non-critical) DAL312 ZDC DEN B757 DAL312 ZDC 210 3148 46 DEN B757 DAL312 ZDC 210 3148 46 DAL312 ZDC 210 3148 46 DEN B757 DAL312 ZDC 210 3148 46 DAL312 ZDC 210 3148 46 DEN B757 DAL312 ZDC 210 3148 46 DEN B757 DAL312 ZDC DEN B757 Same as Owned Designation of R DAL312 ZDC 210 3148 46 CA Coding varies by system: CA DAL312 ZDC 210 3148 46 DEN B757 LA DAL312 ZDC 210 3148 46 RF DAL312 ZDC PO DEN B757 RF DAL312 ZDC PO DEN B757 DAL312 ZDC PO DEN B757 DAL312 ZDC PO DEN B757 CA DAL312 ZDC 210 3148 46 DEN B757 CA DAL312 ZDC 210 3148 46 DEN B757 Owned Pointout Unowned Alert Appears when Pointed Out

7. 7 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 7 ATCOV Subtests Radar Identification Radar Multitasking Alert Detection Weather Identification URET Identification

8. 8 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 8 Radar Identification Subtest

9. 9 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 9 Radar Multitasking Subtest

10. 10 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 10 Alert Detection Subtest

11. 11 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 11 Weather Identification Subtest

12. 12 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 12 URET Identification Subtest

13. 13 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 13 Results Cut scores set by subtest at fifth percentile of 210 CVN ATCS in training –Because 95% of people see color in the same way –13.9% fail one subtest on first attempt –All who retested passed on second attempt Tested 50 CVD subjects –22% pass all subtests on first attempt –32% pass on second attempt Limited deployment began in July –6 of 7 who failed clinical screening passed ATCOV We can clear CVD candidates who can discriminate critical functions on critical displays

14. 14 Federal Aviation Administration ATCS Color Vision Testing August 11, 2009 14 Summary Color is increasingly used to communicate information; controllers must discriminate critical functions on critical displays Office of Aerospace Medicine maintains standards, clears controllers Aerospace Human Factors Division tasked to develop valid occupational test; accomplished Continuing research focuses on precisely documenting required perceptual ability today, propose standards for future displays