One ATA survey discovered that 86% of truckload carriers had a formal relationship with a noncarrier CDL school; 88% of these had a relationship with a non-public, for-revenue CDL school. Drivers themselves might improve fuel efficiency by utilizing a way called progressive shifting, during which the driver shifts by way of the gears (typical vans may have between 10 and 18 gears) in such a fashion as to optimize the ability vary of the engine. Critics cite these relationships as proof that CDL faculties are driver mills for trucking firms.Very few new hires are expected in the close to future,

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