The busy state of the US group rider is

The busy situation of the US group riders is: large orders, wide distribution range and bad weather.

1, large order quantity: during the peak period, the order quantity increases, and more riders are needed to deliver the goods, so the busy rate will increase.

2. Wide distribution range: A wide distribution range means that riders need to spend more time and energy to deliver meals, which will also lead to a higher busy rate.

3. Bad weather: When it rains or the temperature is extremely high or low, the order quantity will generally increase, and the rider needs more time and energy to complete the order on time.