What does VSI/TRA stand for?

MLA style: "VSI/TRA." Acronym Finder . 2012. AcronymFinder.com 12 Feb. 2012 <a href="http://www.acronymfinder.com/Vertical-Speed-Indicator%2fTraffic-Resolution-Advisory-(VSI%2fTRA).html">http://www.acronymfinder.com/Vertical-Speed-Indicator%2fTraffic-Resolution-Advisory-(VSI%2fTRA).html
Chicago style: Acronym Finder . S.v. "VSI/TRA." Retrieved February 12 2012 from <a href="http://www.acronymfinder.com/Vertical-Speed-Indicator%2fTraffic-Resolution-Advisory-(VSI%2fTRA).html">http://www.acronymfinder.com/Vertical-Speed-Indicator%2fTraffic-Resolution-Advisory-(VSI%2fTRA).html
APA style: VSI/TRA. (n.d.) Acronym Finder. (2012). Retrieved February 12 2012 from <a href="http://www.acronymfinder.com/Vertical-Speed-Indicator%2fTraffic-Resolution-Advisory-(VSI%2fTRA).html">http://www.acronymfinder.com/Vertical-Speed-Indicator%2fTraffic-Resolution-Advisory-(VSI%2fTRA).html

Vertical Speed Indicator/Traffic Resolution Advisory

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