FL CDL Combination case studies
FL CDL Combination · Put your knowledge to work in context.
The Florida Commercial Driver License (CDL) Combination Vehicles knowledge test is one of the written knowledge exams a driver must pass to obtain a Class A CDL. It is intended for drivers who will operate tractor-trailers, doubles, triples, or any power unit towing more than one trailer, and who therefore need to understand how multi-unit vehicles behave differently from single trucks. The FL CDL Combination case studies are 5 cases and about 2,891 words.
1Coupling to a High Trailer on a Sloped Gravel Yard
At a Florida produce shipper, you are coupling to a loaded 53-foot dry van that another driver dropped on a gravel yard with a slight side slope. The kingpin sits about 46.5 inches above the gravel, and your fifth-wheel plate is set at roughly 47.5 inches.
625 words, about 3 min2Brake Defect at the Top of a Six Percent Grade
At the top of an 8-mile, 6% mountain grade, you stop at a brake-check area. Your combination is a 2017 conventional tractor pulling a 53-foot refrigerated trailer, grossing 78,000 lb.
577 words, about 3 min3Right Turn With a Long Trailer and an Occupied Left Lane
You are driving a 53-foot trailer through a Florida city and need to make a right turn from a 12-foot lane into a 13-foot receiving lane. The corner curb radius is about 25 feet, and a concrete utility pole sits 8 feet back from the curb on the inside corner.
590 words, about 3 min4Blind-Side Dock Backing at Night in Rain
It is 2200 in heavy rain, and you must back a 53-foot trailer into a 12-foot-wide dock door at a distribution center. The apron gives you about 60 feet of depth, and the approach is a 90-degree blind-side back from a two-lane drive.
576 words, about 3 min5Red Supply Line Separation on the Interstate
You are driving a 2016 tractor pulling an empty 53-foot van at 55 mph on I-75. Air pressure is 120 psi.
523 words, about 3 min