Nanjing Bikeway 24.0 20.0 20.0 22.0 22.0 24.0 24.0 24.0 21.0 21.0 21.0 21.0 21.0 21.0 22.0 22.0 21.0 21.0 21.0 21.0 21.0 21.0 21.0