T&A - Time and Attendance 
T&C - Terms and Conditions 
T&D - Training and Development 
TA - Temporarily Away 
TAB - Technology Advisory Board 
TABS - Top And Bottom Sorter 
TACS - Time and Attendance Collection… 
TAPPI - Technical Association of the P… 
TARL - Technical Analytical Research L… 
TARS - Training Activities Reporting S… 
TATOM - Tracking and Tracing of Overse… 
TATS - Track and Trace Scanner 
TBD - To Be Determined 
TCMAS - Third Class Mail Analysis Syst… 
TDD - Training and Development Departm… 
TDP - Technical Data Package 
TDP - Technical Drawing Package 
TDS - Tailored Delivery Service 
TDS - Tailored Delivery System 
TDSS - Transportation Decision Support… 
TDY - Temporary Duty 
TE - Transitional Employees 
TFP - Total Factor Productivity 
TIM - Ticket-Issue Machines Ltd 
TIME - Time in Hours and Hundredths 
TIMES - Transportation Information Man… 
TIN - Taxpayer Identification Number 
TL - Transmittal Letter 
TL - truck load 
TLA - Three Letter Abbreviation