NJ CDL General Knowledge case studies
NJ CDL General Knowledge · Put your knowledge to work in context.
A New Jersey Commercial Driver License (CDL) lets you legally operate commercial motor vehicles such as tractor-trailers, tank trucks, and buses on public roads. To get one, you must pass a series of written knowledge tests at a Motor Vehicle Commission (MVC) agency, and the General Knowledge test is the one every CDL applicant takes regardless of which vehicle class or endorsement they are pursuing. The NJ CDL General Knowledge case studies are 5 cases and about 4,521 words.
104:40 Pre-Trip: Six Findings and a Hot Load
You are doing a pre-trip on a 2018 day-cab tractor and a 53-foot dry van at your terminal in Kearny at 04:40 in February; the temperature is 18°F. You find: (a) the left steer tire measures 3/32 inch in the two outer grooves, and there is a 1-inch cut in the sidewall that does not expose cord; (b) with the engine off and the brakes released, system pressure falls from 120 to 116 psi over two minutes; (c) the right rear outer trailer tire has a 2-inch gouge with fabric cord visible; (d) the left drive axle slack adjuster pushrod moves 2 3/8 inches when the brakes are fully applied at 90 psi (the adjustment limit for this chamber is 2 inches); (e) one of the three clearance lamps across the top rear of the trailer is out; (f) the rearmost hanger of the trailer's left spring is cracked through.
1,042 words, about 5 min2Left Steer Tire at 65 mph on I-95
You are running a 2020 sleeper tractor pulling a loaded 53-foot van at 79,000 pounds gross, southbound on I-95 in the center lane at 65 mph, just north of the Route 1 interchange near New Brunswick. It is 02:30, clear and dry, traffic light.
893 words, about 4 min3Six Coils, 80,700 Pounds, and a Scale Ticket
You pick up a flatbed load of six steel coil bundles, each weighing 8,200 pounds, in Newark for a receiver 26 miles away in Parsippany. The bill of lading shows 49,200 pounds of cargo.
827 words, about 4 min4Six Percent Grade and a Falling Air Gauge
You are driving a 2019 three-axle tractor pulling a tandem-axle van trailer, loaded to 76,400 pounds gross, eastbound on I-80 approaching the Delaware Water Gap. The grade ahead is posted 6 percent for two miles with a 35 mph advisory for trucks.
927 words, about 5 min5Sixty Hours at 07:30
You drive for a New Jersey carrier operating on a 60-hour/7-day cycle. Your last 34-hour restart ended eight days ago, and before today your 7-day on-duty total is 57 hours 30 minutes.
832 words, about 4 min