UPS: Weather's been severe, but Class Is are missing the on-time mark regardless - Progressive Railroading The head of transportation for United Parcel Service (UPS) can sum up Class Is’ service performance for much of this year in one word: underwhelming. Although they got off to a good start in 2019’s first three weeks, the large railroads didn’t meet stringent on-time performance and availability requirements in the first half, says UPS Vice President of Corporate Transportation Ken Buenker. The world’s biggest parcel delivery company, UPS is one of the largest users of intermodal rail services in North America. For each Class I, the company assigns a minimal acceptable result (MAR) of 95 percent reliability for on-time deliveries or outbound departures. Since UPS’ package and freight forwarding business hinges on the delivery times promised to customers, its operations need to be carried out like clockwork, including the timely transportation of parcels by rail, truck or air.