Transportation expenses are becoming a larger percentage of the cost of goods sold as a result of a number of issues that businesses confront today. These challenges include rising fuel costs, new regulatory obligations, and increasingly global operations with higher levels of lead time variability. The biggest single expense in logistics is transportation, which is usually nearly twice as expensive as warehousing and inventory. In order to effectively manage a company’s supply chain network and maintain the flexibility necessary to satisfy constantly increasing client demand, an effective transportation management system is required.