Illinois CDL General Knowledge case studies
Illinois CDL General Knowledge · Put your knowledge to work in context.
The Illinois CDL General Knowledge test is the written knowledge exam that a commercial driver must pass to obtain a Commercial Learner's Permit and, later, a Commercial Driver's License. It is required for anyone who will operate a Class A, Class B, or Class C commercial motor vehicle on Illinois roads - including tractor-trailer drivers, straight-truck drivers, bus drivers, and those who haul hazardous materials or tow trailers. The test is administered at a Secretary of State driver services facility and must be passed before the CDL skills test. The exam is multiple choice and draws on the General Knowledge portion of the Illinois CDL study guide. The Illinois CDL General Knowledge case studies are 5 cases and about 2,574 words.
1Four Pounds at the Gladhand
At 05:40 on a 38°F morning, a driver is pre-tripping a 2021 tractor pulling a loaded 53-foot van. The scale ticket shows 78,500 lb gross.
606 words, about 3 min2Six Percent and the Smell of Hot Linings
A driver is at the top of a four-mile, 6 percent downgrade in dry daylight. The rig is a three-axle tractor pulling a 40-foot flatbed loaded with steel coils; the scale ticket shows 76,000 lb GCW.
552 words, about 3 min3Bridge Deck at 28 Degrees
At 06:10, the temperature is 28°F and freezing drizzle is falling. A driver is pulling a 65,000-lb box trailer on a two-lane US route posted 45 mph.
485 words, about 2 min4High Beams and a Dark Pedestrian
At 22:30, a driver is on a rural two-lane road posted 55 mph with a 40-foot trailer and 72,000 lb GCW. High beams are on and the windshield is clean.
470 words, about 2 min5Twenty-Foot Pipe Bundle at the Steel Yard
At a steel yard, a driver is loading a 20-foot bundle of six round steel pipes onto a 48-foot flatbed. The bundle weighs 8,000 lb.
461 words, about 2 min