Rank | Abbreviation | Meaning |
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***** | CERTIFIED TRAVEL COUNSELOR (CTC). | One who has passed a series of rigorous tests of professional competency administered by the Travel Institute, formerly known as the Institute of Certified Travel Agents.
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**** | CERTIFIED MAIL. | A premium category of mail delivery that provides proof of receipt by the addressee. Notifications required by contract are often sent certified mail, as are airline tickets.
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*** | CERTIFIED NICHE SPECIALIST (CNS). | One who has taken a course in the areas of either Mature Adult, Family, or Special Interest Travel administered by the American Society of Travel Agents.
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* | CERTIFIED | Conception and Evaluation of Roadside Testing Instruments to Formalise Impairment Evidence in Drivers
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