Fleet Manager’s vehicle location, performance, and engine diagnostic data is now available to third-party systems via an Application Programming Interface (API) that functions as a web service. This Open API enables managers, resource planners, maintenance technicians to use the data from within Fleet Manager to enhance their operations in a wide variety of ways. This API is related to vehicle fleet management. The data consists of a mix of landmark, performance, and alert data. The alerts are generated by vehicle locations (landmarks), by operating conditions (speed, idle time, rapid acceleration, and many others), vehicle maintenance schedules, and unauthorized use.