South Dakota CDL — General Knowledge Practice Test 9

1.A driver ahead keeps glancing back over one shoulder. What does the manual suggest that driver may be about to do?
Stop for a passengerSpeed upTurn on the hazard lightsChange lanes
2.What does the manual give as the main reason drivers exceed speed limits?
To keep the engine in its power bandTo stay ahead of tailgatersTo avoid shifting gearsTo save time
3.You are driving 55 mph on a dry highway when steady rain wets the road. About what speed does the manual's wet-road rule suggest?
About 20 mphAbout 45 mphAbout 50 mphAbout 35 mph
4.Which behavior does the manual describe as hesitation, a clue that a driver is confused?
Passing on the right at high speed, then cutting back inDriving very slowly, braking often, or stopping mid-intersectionFollowing other vehicles too closely in heavy trafficFlashing headlights at oncoming traffic
5.When you are pulling a trailer, what can rough acceleration damage?
The steering gear boxThe couplingThe radiator shuttersThe brake linings
6.What does the manual say to do first and foremost when an aggressive driver confronts you?
Match their speed so that they cannot cut in ahead of youDo all you can to move out of that driver's pathBrake hard to make them back offPull alongside and gesture at them
7.In stab braking, when do you put the brakes fully back on after releasing them?
As soon as the wheels start rolling againImmediately, before the wheels rollAfter a slow count of fiveOnly once the vehicle has stopped
8.During the in-cab part of the seven-step inspection, what should you check about the safety belt?
That it is the same color as the seat and the door panelThat it locks only while the engine is runningThat it carries a current inspection tag issued by the motor carrier's shopThat it is securely mounted, adjusts, latches, and is not ripped or frayed
9.A fire truck is stopped on a South Dakota road with its red signals on, and you are approaching from the opposite direction. Does the stop requirement apply to you?
No; it applies only to traffic moving in the same directionOnly on roads with four or more lanesYes; it applies to motorists approaching from any directionOnly if a firefighter signals you to stop
10.A chemical analysis shows a South Dakota driver was operating a CMV with an alcohol concentration of 0.05%. What does the manual say follows?
A 24-hour out-of-service order and nothing more, since it is a first offenseA 60-day disqualificationNo action, because the result is under 0.08%A commercial license disqualification of not less than one year