The term PART OT TB is a four letter acronym which stands for 'Public Access to Transportation Benefits'. This program was created to provide public transportation benefits to low-income individuals and families. It is funded by the federal government and administered by state and local governments. The program provides access to public transportation services such as buses, trains, and other forms of transportation. The goal of the program is to reduce the cost of transportation for those who cannot afford it, while also providing access to jobs, education, and other opportunities.