road_data = {
    "状元南路": {
        "时间":['7:00-8:00','8:00-9:00','9:00-10:00','10:00-11:00'],
        "平均速度(km/h)": [23,24,23,22],
        "流量(辆/h)": [500,600,620,650]
    },
    "鳌峰路": {
        "时间":['7:00-8:00','8:00-9:00','9:00-10:00','10:00-11:00'],
        "平均速度(km/h)": [33,23,26,32],
        "流量(辆/h)": [720,750,770,780]
    },
    "昭亭路": {
        "时间":['7:00-8:00','8:00-9:00','9:00-10:00','10:00-11:00'],
        "平均速度(km/h)": [21,25,28,23],
        "流量(辆/h)": [450,500,600,650]
    }
}
for road,data in road_data.items():
    number = data["流量(辆/h)"]
    summary = sum(number)
    print(road,"7：00-11：00总车辆数为",summary)