Final answer:
Paragraph 080302 of the Joint Travel Regulations (JTR) refers to the reimbursement policy for travelers who choose alternate transportation that results in savings to the government versus the directed use of government provided airfare.
Step-by-step explanation:
The Joint Travel Regulations (JTR), particularly paragraph 080302, covers the scenario where a traveler is directed to use a government provided airfare (e.g., GSA City Pair fare) but instead chooses to use a different mode of transportation that results in a savings to the government. This section outlines that in such cases, the traveler may be reimbursed for the actual cost of transportation used not to exceed what the cost would have been if the traveler had used the directed airfare.