ADOT continuous improvement yields much faster way to fill a water tank

Process improvement saves time on weed treatment, boosts efficiency

SHOW LOW – An initiative that has reduced wait times at Motor Vehicle Division offices is one of the big results of the Arizona Department of Transportation’s commitment to continuous improvement. But even finding a better way to fill a water tank used for treating roadside weeds is helping ADOT provide better service for Arizonans.

ADOT Water TruckExamining their processes and how to improve them, Show Low-based maintenance workers noted that it took 45 minutes to refill the 300-gallon water tank on their truck when they were spraying for weeds. It also involved driving back to the maintenance yard for refills because the three-quarter-inch connector was designed for a garden hose.

Creating a new 2-inch connector out of PVC pipe now allows them to fill the tank in about 10 minutes. Because of the new connector, they also can also refill the tank from a water truck or fire hydrant without having to drive back the maintenance yard.

The result: less time needed to treat weeds along highways and more time available to tend to other maintenance needs in the Show Low area.

All four herbicide trucks used by maintenance crews in ADOT’s Northeastern District now have the refilling system.

It’s one more way continuous improvement is helping ADOT increase its value to Arizona by making more efficient use of time, resources and taxpayer dollars.

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