Mississippi CDL General Knowledge case studies
Mississippi CDL General Knowledge · Put your knowledge to work in context.
The Mississippi CDL General Knowledge exam is the written knowledge test that the Mississippi Department of Public Safety (DPS) requires before a commercial learner's permit or commercial driver's license can be issued. It is aimed at anyone who plans to drive a Class A, B, or C commercial vehicle on public roads, from tractor-trailer operators to delivery drivers and bus drivers. The Mississippi CDL General Knowledge case studies are 5 cases and about 2,301 words.
1Air Pressure Falling on a Six Percent Downgrade
You are driving a 3-axle tractor pulling a tandem-axle van at a gross combination weight of 78,000 lb down a 6 percent grade that runs for 5 miles. You selected a low gear at the crest and are holding 35 mph.
522 words, about 3 min2Trailer Air Line Separates at Highway Speed
You are at 60 mph in the right lane of an interstate with a 3-axle tractor and a tandem-axle 53-foot van, gross combination weight 72,000 lb. Without warning you hear a loud bang, the trailer brakes lock, and the red trailer air supply knob pops out.
464 words, about 2 min3Leaking Acid Drum at a Truck Stop Fuel Island
You are parked at a truck stop fuel island when you notice liquid dripping from under a pallet in your van. You carry 20 drums of UN 1789, hydrochloric acid, Class 8, totaling 3,200 lb, plus general freight.
426 words, about 2 min4Students Crossing a Four-Lane Divided Road
You are driving a 20-passenger school bus with 14 students aboard on a four-lane divided road with two lanes in each direction and a 30-foot raised median. The posted speed limit is 45 mph.
443 words, about 2 min5Partially Loaded Smooth-Bore Tanker on an Off-Ramp
You are assigned a 5,000-gallon smooth-bore tanker with three compartments, currently carrying 3,200 gallons of milk, about 64 percent of capacity, with product evenly spread across the compartments. Gross weight is 62,000 lb.
446 words, about 2 min