For the past year, Mac-Gray, a provider of laundry facilities management services, has equipped its fleet of 100 machine coin collectors with wireless GPS systems with Vettro’s field service mobile application to dispatch jobs and optimize driving routes.

In Boston alone, the company estimates fuel savings of 12 percent due to shorter driving distances.

Mac-Gray’s previous system relied on assignments via manual route sheets, information written by the collection managers, and undesignated driving routes based on the collector’s knowledge of locations and appointment times. The manual system led to errors in addresses and directions, which wasted drive time and increased vehicle emissions, according to Mac-Gray. The company worked with Vettro to create CollectorLinx, a dispatch system built on Vettro 360 for Service & Repair that leverages GPS-enabled Motorola i355 mobile devices to minimize Boston drive routes.