In this paper we propose four ontologies for semantic modeling of information for Freight Transportation Exchanges and we discuss the relationships between them. They play an important role in semantic modeling of freight transportation entities and in supporting the development of agent-based semantic logistics services. This work complements our previous proposal of an agent system for brokering of freight transportation exchanges. It extends existing systems for online announcement of transportation opportunities with the provisioning of automated matchmaking services that facilitate the connection of the owners of goods with the freight transportation providers, as well as their appropriate contracting.