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The bus driver reduce the speed to zero by the brakes when reach the bus stop,and then accelerate by the accelerator when leave.the original kinetic energy of the moving bus was consumed, on the other hand fuel was consumed to let the bus move up again.It's a waste of energy! Trapezoidal bus stop is an energy-saving design.Take the advantage of the slope, The uphill bus moving with the inertia decelerate naturally,and the downhill will also help the bus Accelerate.the design use the mutual conversion between kinetic and potential energy to achieve energy-saving.
Diguan feng, Chao Ren, Shixiao Li, Dan Gao