The Houston County Sanitation Department in Alabama has completed its 1,000th consecutive day without a “medical case,” in part thanks to its fleet of automatic-lift refuse trucks. Previously, the department averaged about 20 medical cases per year, reported the Dothan Eagle.

The fleet’s safety numbers changed once the department began purchasing automatic-lift trucks in 2014. Now, all but two trucks are automated, which means only one employee is needed to operate the truck instead of two, and drivers rarely have to exit the vehicle. Next, the department’s safety director told the Dothan Eagle that the fleet may install strobe lights to improve visibility.

Related: Volvo Tests Autonomous Refuse Truck

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