Which of the following best describes a "travel authorization" in DTS?

The description of a "travel authorization" in the Defense Travel System (DTS) refers to a prior approval request for government travel, ensuring that the necessary funding is available before the travel occurs. This process is essential to maintain accountability and proper management of government resources. By obtaining a travel authorization, travelers are ensuring that their travel plans are approved in advance, which mitigates the risk of incurring expenses that may not be reimbursed later.

The travel authorization serves as a formal request that outlines the details of the trip, including the purpose, destination, dates, and estimated expenses. This allows the approving officials to assess the necessity and appropriateness of the travel based on the agency’s policies and funding constraints. Thus, it not only authorizes the travel but also secures the financial aspects associated with it.

This option captures the essence of what a travel authorization accomplishes within the DTS framework, making it the best choice.