Illinois CDL — General Knowledge Practice Test 2

1.What is the best overall advice about driving in fog?
Avoid driving in it if possible, and slow before enteringMaintain highway speed to get through it fastFollow closely behind another vehicle's lightsUse only high beams
2.Why do commercial vehicles need extra care about space to the sides?
They must always straddle two lanesThey cannot turn at allThey are wide and fill nearly the whole laneTheir mirrors block the side view completely
3.Using the proper downgrade braking method, when do you reapply the brakes after releasing them?
When speed returns to your chosen safe speedWhen speed drops to a full stopOnly at the very bottom of the gradeEvery ten seconds regardless of speed
4.A CDL holder is driving their personal car, not a commercial vehicle. At what blood-alcohol level are they considered legally impaired?
0.04 percent0.08 percent0.02 percent0.00 percent
5.If your vehicle does not have self-canceling turn signals, what must you remember after a turn?
Turn the signal off after the turnLeave it on until the next stopSwitch it to the opposite directionTurn on the four-way flashers instead
6.In emergency steering, what should you be ready to do right after you clear the obstacle?
Countersteer back toward your original pathBrake as hard as possibleShift into neutralHold the wheel turned until you stop
7.Who is responsible for making sure a commercial vehicle is not overloaded?
The driver of the vehicleOnly the shipper who loaded itOnly the receiving warehouseOnly the vehicle owner
8.What does a round, black-on-yellow sign placed ahead of a railroad crossing mean?
A rest area is aheadA railroad crossing is ahead — prepare to stopA weigh station is aheadA steep downgrade is ahead
9.When you must back a tractor-trailer, which direction is generally safest to back and turn toward?
Toward the passenger sideToward the driver's sideStraight back only, never turningWhichever side is closest to the curb
10.How long is a driver disqualified for a third serious traffic violation within the same three-year period?
60 days120 days90 daysOne year