Load boards are the clearing mechanism for the spot freight market. They operate as digital bulletin boards where available freight and available truck capacity can find each other in near real-time.

The major load boards — DAT, Truckstop.com (ITS), and 123Loadboard — host millions of freight postings daily. Smaller niche boards serve specific equipment types, regional markets, or industry verticals. The information on a load board posting typically includes: pickup city and state, delivery city and state, pickup date, load type and equipment needed, approximate weight, and contact information for the posting broker or shipper.

For carriers, load boards are an essential tool for minimizing deadhead. A driver who completes a delivery in a city where they have no pre-planned load can search for available loads departing from that area, book a spot load, and keep the truck moving revenue miles rather than repositioning empty.

For brokers, load boards are one channel for sourcing capacity when their regular carrier network is at capacity. A broker with a load that their regular carriers can't cover posts it on the board to attract carriers who have available trucks on that lane.

Load board rate data is also used as a spot market benchmark. Many boards publish average rates for a given lane based on recent transaction data, giving both shippers and carriers a reference point for negotiating spot loads.

The spot market is efficient at clearing capacity during normal conditions. During capacity crunches, load boards reflect the imbalance quickly — posted loads accumulate faster than available capacity, and rates rise to attract carriers from other lanes.