Storyline: Driverless sweepers clean streets amid heatwaves in China [Voice_over] In Wuhu city, of east China's Anhui Province, driverless street sweepers are helping reduce cleaners' workloads during the hot summer months. The smart sweepers clean, wash and vacuum based on an integrated computing and induction system. In addition to the sweepers, mist cannon trucks, which are used to fight smog, are also working on tight schedules. [Sound_bite] Xie Aiyu, street cleaner: "Now we clean streets at 5am to 9:30am and 4pm to 6pm. The hottest time of a day driverless sweepers replace us and relieve our stress." [Voice_over] On this day the local weather agency issued a yellow alert -- the third highest in a three-tiered warning system - for temperatures that will climb to 35 degrees Celsius at noon. [Restrictions : No access Chinese mainland]