A broker should know the driver's side so he knows the questions to ask. For example in flatbed, we NEED to know the weight and dimensions before we can offer the load out. Different trucks have different max load weights.
For example: shippers offers a load at 45,000 lbs. The truck I send can load up to 47,000 legally. Actual load weight? 48500 lbs.
If I had known the actual load weight up front, I could have saved the driver, the shipper, AND myself a heck of a lot of hassle by sending in the other truxk that COULD load that 48,500 lbs. load legally. Would have saved the shipper some money, too. Yes, I did get TONU for the first truck, paid straight to the driver.