presented to: by: date: federal aviation administration development of occupational testing for air...

Presented to:

By:

Date:

Federal AviationAdministrationDevelopment of

Occupational Testing for Air Traffic Control Color Vision

AVS Managers

Tom Chidester, Ph.D., Manager AAM-500

August 11, 2009

2 2Federal AviationAdministration

ATCS Color Vision TestingAugust 11, 2009

CVD Perception of Color

Deuteranopia

Protanopia

(Pictures generated by an on-line CVD simulators: www.vischeck.com)

Tritanopia



Severe Protanopia – Old Technology



Severe Protanopia – Current Displays



Critical Functions Using ColorSystem Function Color Redundant Coding AIR Job Analysis Reference ARTS Owned aircraft white Greater luminance 8A.01.01 (perform situation monitoring) Unowned aircraft green None 8A.01.01 (perform situation monitoring) Pointout yellow None 8A.01.04.08 (issue pointouts);

8A.01.04.09 (respond to pointouts)

Alert red Flashing alert text right of datablock

8A.01.02 (resolve aircraft conflict situations)

Weather 1 dark gray None 8A.01.05 (assess weather impact) Weather 2 brown None 8A.01.05 (assess weather impact) Weather 3 reddish brown None 8A.01.05 (assess weather impact) URET (aircraft list)

Owned aircraft white Greater luminance 6A.01.03 (manage air traffic sequences); 6A.01.04 (route or plan flights)

Predicted conflict red Position 6A.01.02 (resolve aircraft conflict situations)

Potential conflict yellow Position 6A.01.02 (resolve aircraft conflict situations)

Wrong altitude for direction of flight

yellow Position 6A.01.02 (resolve aircraft conflict situations)

Airspace conflict cyan Position 6A.01.02 (resolve aircraft conflict situations)



Terminal

ACD

Enroute

DSR

Terminal

STARS

Highlight (non-critical)

DAL312 ZDCDEN B757

DAL312 ZDC210 3148 46 DEN B757

DAL312 ZDC210 3148 46

DAL312 ZDC210 3148 46 DEN B757

DAL312 ZDC210 3148 46

DAL312 ZDC210 3148 46 DEN B757

DAL312 ZDC210 3148 46 DEN B757

DAL312 ZDCDEN B757

Same as OwnedDesignation of R

DAL312 ZDC210 3148 46

CA

Coding varies by system:

CA

CACADAL312 ZDC210 3148 46 DEN B757

LALADAL312 ZDC210 3148 46

RFDAL312 ZDC PODEN B757

RFDAL312 ZDC PODEN B757

DAL312 ZDC PODEN B757DAL312 ZDC PODEN B757

CADAL312 ZDC210 3148 46 DEN B757

CADAL312 ZDC210 3148 46 DEN B757

Owned

Pointout

Unowned

Alert

Appears when Pointed Out



ATCOV Subtests

• Radar Identification• Radar Multitasking• Alert Detection• Weather Identification• URET Identification



Radar Identification Subtest



Radar Multitasking Subtest



Alert Detection Subtest



Weather Identification Subtest



URET Identification Subtest



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



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

presented to: by: date: federal aviation administration development of occupational testing for air...

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