Thirty-four bus routes comprise the TCAT system. Routes are identified by number and are usually indicated on a marquee at the front of the bus, and sometimes on the side as well. TCAT's main hub is Green Street Station, near Ithaca Commons, a two-block pedestrian mall in downtown Ithaca. Most non-South Hill routes run through the Cornell University campus as; East Avenue near Tower Road is considered a secondary hub.
The bus fleet compiles 54 buses mostly 40 feet long, with two cutaway buses and one 29 foot bus. This is roster as of September 13th, 2019. Except for the second hand 2005 models, the first two digits of the fleet number represents the last two digits of the year the vehicle was built. In the case of buses built between 2000 and 2009, only the first digit represents the year it was built. For example, 601 would be built in 2006, and 901 would be built in 2009. Following this, it's clear that 1101 would be a 2011 model.