The current research uses Porter's differentiation strategy framework to examine Class I LTL motor carrier service expansion habits over the last twenty years. The examination focuses on carriers bundling transportation and warehousing services together to help differentiate their service offerings from competitors. Results indicate that carriers are expanding service offerings to include warehousing services and are providing significant value-added services to customers. Continuous growth in

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... arehouse service expansion was evident from passage of the Motor Carrier Act of 1980 to the mid-90's.