ABB's flash-charging technology and onboard traction equipment, which make the flash-charging possible, are part of its innovative TOSA (Trolleybus Optimisation Système Alimentation) solution, which is the world's leading technology of its kind.

The fleet will run on the Busway Bus Rapid Transit (Line 4) route connecting the historic center of Nantes with municipalities on the southern side of the river Loire. The new bus system will increase passenger capacity by 35 percent enabling sustainable transport for about 2,500 commuters every hour. Since the route's inauguration in 2006, passenger numbers have increased, leading to overcrowded buses. The 24 meter long, fully electric buses from HESS will be the first of their kind in the world to be equipped with the flash-charging technology, enabling a higher passenger capacity, emission-free public transport and noise reduction. The buses are expected to be operational by the end of 2018.

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