A driver must obtain a Class B Commercial Driver License in order to operate heavy commercial trucks, including tri-axle dump trucks. Drivers with a Class B CDL may drive trucks with attached cabs and cargo areas weighing more than 26,000 pounds. Trucks allowed under this license include dump trucks, tow trucks and delivery trucks. Prepare for the state CDL exam by completing a training program at a vocational school or community college; CDL training programs also teach truck operation skills.
First, take a test to obtain a class B CDL learner's permit. Some programs mandate that students have a clean driving record and can pass a drug test. Because a CDL driver is held to higher driving standards than those of non-commercial license holders, a CDL driver is expected to avoid serious traffic violations while driving any vehicle. A driver who commits serious violations can lose his CDL certification.
A driver may only hold a CDL from one state, typically his home state. To drive a triple-axle vehicle, a driver may need to obtain a special endorsement in his state, although this rule varies depending on local laws. A driver may have to pass additional tests to gain the endorsement. The Department of Motor Vehicles in each state provides detailed information on any additional qualifications for driving tri-axle dump trucks. Each state's DMV also provides CDL Manuals for interested drivers; in some cases, these are available online.
To practice with a CDL Learner's Permit, a driver must be accompanied by a certified CDL driver. A driver must pass a Department of Transportation physical to prove that he is medically eligible for the license.
The state obtains and checks the driving record and proof of residency and charges fees to apply for the license. These fees vary by state.