Air-conditioned buses have been introduced by the WBSTC & CSTC (now under WBTC). Under Jawaharlal Nehru National Urban Renewal Mission (JNNURM) these buses have been included as a part of travel comfort to commuters. Air-conditioned buses are operated by WBSTC directly & through outsourcing. These buses are served by Tata Marcopolo Buses and Volvo Low Floor Buses. Air conditioned buses were launched as of July 2014 by CSTC on different routes across the city and suburbs. They are in blue and white livery and is a complete fleet of Volvo 8400 model & Ashok Leyland AC JanBus, bought under JNNURM scheme. AC buses are also operated under CTC (now WBTC). Around 450 JanBus, world's first, has been launched from 30 July 2014. These buses have been manufactured by Ashok Leyland