The Home of Smart Auditing® and the nation’s leading provider of expert-based freight auditing services. Based in Arkansas, American Truck & Rail Audits, Inc. is the Home of Smart Auditing® and the nation’s leading provider of expert-based freight auditing services. AMTR is a “knowledge-based” audit company, and we’ve been auditing freight for over 35 years. With Smart Auditing® we apply the knowledge and the experience of our auditors using leading-edge IT and proprietary knowledge-based discovery processes to discover freight overcharges, recover lost freight monies for our clients, and educate them on how to not lose freight monies in the future