后勤学是一门有关运输科学的学科。运输科学作为一个成长的和进化的领域，是研究有关无论是通过汽车，卡车，飞机，火车，船或者步行，高效地从点A到点B转移物品和服务所运用到的观念，方法和原则。方法论涉及物理学，运筹学，概率和控制理论。
Logistics is a study of transportation science. Transportation science, a growing and evolving field, is the study of the concepts, methods and principles of moving products and services effectively and efficiently from point A to point B - whether by car, truck, airplane, train, ship or on foot. Its methodologies draw from physics, operations research, probability and control theory.