Less-than-truckload carriers use general rate increases (GRIs) to make adjustments to base rates. The increases are applied to general tariff codes and vary by lane and weight tier. Some LTL pricing agreements with shippers work off a base rate schedule and utilize account-specific negotiated discounts. The base rate will increase when a GRI is taken but shippers continue to apply their discounts to the new rates. The headline percentage change announced by the carriers is the expected average increase the rate adjustments will have across all of the impacted accounts.