The FCHV-BUS2, equipped with two units of TMC's high-performance Toyota FC Stack and incorporating the hybrid technologies found in the Toyota Prius hybrid passenger sedan and Hino's HIMR System, achieves high running efficiency by recovering energy during deceleration and delicately alternating between its fuel cells and secondary battery for power supply to the motor according to running conditions. 

The FCHV-BUS2 was the first fuel cell-powered bus officially approved by Japan's Ministry of Land, Infrastructure and Transportation. Issued a license plate in 2002, the vehicle has been carrying out trial runs on public roads. It is also expected to run on regular Tokyo metropolitan bus routes this summer as part of a fuel cell bus pilot project promoted by the Tokyo Metropolitan Government. 

Technical features
As explained above, the fuel cell buses that will operate at EXPO 2005 Aichi, Japan will represent an improved version of the FCHV-BUS2. The main specifications of the current FCHV-BUS2 are as follows: 

VehicleBase platform:Blue Ribbon City (Hino low-floor commuter bus)
Overall length / width / height:10,515 / 2,490 / 3,360 mm
Maximum speed: 80 km/h
Occupant capacity: 60 people
Fuel cell stackType: Polymer electrolyte fuel cell
Output: 90 kW x 2
Motor : Type Permanent magnet
Maximum output: 80 kW x 2
Maximum torque: 260 Nm x 2
Fuel Type: Pure hydrogen
Storage method: High-pressure hydrogen storage tank
Maximum storage pressure:35 MPa (350 atmospheres)
Secondary batteryType:Nickel-metal hydride

At EXPO 2005 Aichi, Japan
At EXPO 2005 Aichi, Japan, the improved fuel cell hybrid buses will operate as follows: 
Period: March 25 - Sept. 25, 2003 (185 days) 
Hours: 9 a.m. - 6 p.m. (tentative) 
Service area: Between the Nagakute and Seto areas (about 3.5 km) 
Traveling time: about 10 minutes (one way) 
Departure intervals: Every 6 - 8 minutes 
Passenger capacity: Approximately 900 - 1,200 passengers/hour, round-trip