A load board, sometimes known as a freight board or freight matching service, connects shippers and carriers. Shippers and freight brokers post available loads and truckers find loads that are convenient to them. Load boards list potential jobs for carriers, but the actual transaction takes place via email or phone.
When the carrier responds to the load board, negotiations take place between the broker and carrier. Often, the broker will talk to several carriers about the same load to find the cheapest way to carry the freight.