National Traffic Service provides parcel auditing services and software to corporations who are high volume UPS and FedEx shippers. We'll check for late deliveries, liability, duplicate billings and overcharges such as incorrect discounts, improper accessorials, fuel surcharges, etc. And if you want to audit and pay your parcel invoices in-house, our TrafficPro parcel auditing and payment system allows you to automate and streamline the process. You'll be able to receive invoicing electronically; automatically audit your invoices; identify and adjust overcharges; create payment files; and run customized reports regarding you parcel shipping data.