South Dakota CDL — General Knowledge: Road Signs Practice Test

Question 1

Pavement markings ahead of a railroad crossing carry the same meaning as the advance warning sign. What do they consist of?

Accepted Answer

An 'X' with 'RR', and on two-lane roads a no-passing marking — The markings are an 'X' with the letters 'RR.' On two-lane roads a no-passing marking goes with them.

Answer

A solid red bar painted across both lanes

Answer

The word 'TRAIN' in yellow letters, repeated in each lane

Answer

A row of white triangles pointing toward the driver

Question 2

During the walk-around inspection of an oversize load, what must you confirm about its signs and permits?

Accepted Answer

Required signs are mounted safely and properly, and required permits are with you — For an oversize vehicle, the walk-around covers the required signs, including flags, lamps, and reflectors, which must be safely and properly mounted. All required permits have to be in the driver's possession.

Answer

The signs are stored in the cab and the permits are on file at the terminal

Answer

Only a rear 'wide load' sign is needed, and permits are optional

Answer

The permits are taped to the load where inspectors can read them

Question 3

South Dakota exempts covered farm vehicles from the CDL requirement. What lets law enforcement identify such a vehicle?

Accepted Answer

A farm license plate or farm sticker — A covered farm vehicle is registered with a farm license plate or a farm sticker issued by its state of registration. That marking is what allows officers to recognize it as a farm vehicle.

Answer

A slow-moving-vehicle emblem

Answer

A 'FARM USE' placard on all four sides

Answer

An orange flag on the antenna

Question 4

Which statement about Class 6 on the manual's hazard class table is correct?

Accepted Answer

It is Poisons, and the examples given are pesticides and arsenic — The hazard class table lists Class 6 as Poisons, with pesticides and arsenic as its examples. Corrosives are Class 8, Radioactive is Class 7, and Oxidizers are Class 5.

Answer

It is Corrosives, and the examples given are hydrochloric acid and battery fluid

Answer

It is Radioactive, and the examples given are uranium and plutonium

Answer

It is Oxidizers, and the examples given are ammonium nitrate and hydrogen peroxide

Question 5

Your right-side tires buzz over a shoulder rumble strip for the second time in a few minutes. What does the manual say that should tell you?

Accepted Answer

It is a warning sign of fatigue, and you should stop and rest — Drifting out of the lane or hitting a shoulder rumble strip is on the manual's list of signs that a driver is about to fall asleep. Any of those signs means it is time to stop driving and sleep or take a short nap.

Answer

The lane markings are worn and should be reported

Answer

Your steering axle is overloaded

Answer

Your trailer is off-tracking, which is normal on straight roads

Question 6

In fog, what does the manual suggest using as a guide to how the road may curve ahead?

Accepted Answer

Roadside highway reflectors — The fog advice says to use the reflectors along the roadside to judge the curve of the road. Lights seen ahead are not a reliable guide, since they may belong to a vehicle that has left the road.

Answer

The taillights of the vehicle ahead

Answer

Your high-beam headlights

Answer

The sound of traffic ahead

Question 7

A South Dakota Seasonal CDL holder generally may not haul placarded quantities of hazardous materials. Which load is one of the exceptions?

Accepted Answer

Up to 1,000 gallons of diesel fuel — The Seasonal CDL bars placarded hazardous materials with three exceptions. They are diesel fuel in amounts of 1,000 gallons or less, certain liquid fertilizers, and solid fertilizers that are not transported with any organic substance.

Answer

Up to 1,000 gallons of gasoline

Answer

Diesel fuel in any quantity

Answer

Up to 3,000 gallons of propane

Question 8

During the walk-around inspection, what does the manual say to check about license plates at the rear of the vehicle?

Accepted Answer

That they are present, clean, and secured — The rear portion of the walk-around includes the license plate or plates. They should be there, be clean, and be secured.

Answer

That they are covered to keep off road spray

Answer

That they are mounted on the cargo doors

Answer

That the plate number matches the trailer's serial number

Question 9

Which of these, involving road signs, does the manual list as a warning sign of fatigue?

Accepted Answer

Missing exits or traffic signs — One of the signs that should tell a driver to stop and rest is trouble remembering the last few miles, along with missing exits or traffic signs.

Answer

Reading every sign aloud

Answer

Slowing down for each warning sign

Answer

Noticing signs sooner than usual

Question 10

A vehicle is too light for its weight alone to call for a CDL, but its cargo requires hazardous materials placards. Does South Dakota require a CDL to drive it?

Accepted Answer

Yes; any size vehicle needing placards requires a CDL — South Dakota's list of commercial motor vehicles includes any size vehicle that requires hazardous materials placards. It also covers one carrying a select agent or toxin listed in 42 CFR Part 73.

Answer

No; a CDL is needed only above 26,001 pounds

Answer

Only if the vehicle also carries passengers for compensation

Answer

Only when the vehicle crosses a state line

Question 11

Which of these is an outside-the-vehicle distraction on the manual's list?

Accepted Answer

Reading billboards or other road advertisements — The manual separates distractions inside the vehicle from those outside it. Billboards and other road advertisements are on the outside list, with crash scenes, sunlight, and road construction.

Answer

Adjusting the climate controls

Answer

Talking to a passenger

Answer

Picking up something that fell onto the cab floor

Question 12

Which sign marks the railroad grade crossing itself?

Accepted Answer

The cross-buck sign — The cross-buck stands at the crossing and marks it. The round, black-on-yellow sign is placed ahead of the crossing as an advance warning.

Answer

The round, black-on-yellow sign

Answer

The no-passing-zone sign

Answer

The red triangle with an orange center

South Dakota CDL — General Knowledge: Road Signs practice test

Study questions with answers

1. Pavement markings ahead of a railroad crossing carry the same meaning as the advance warning sign. What do they consist of?

2. During the walk-around inspection of an oversize load, what must you confirm about its signs and permits?

3. South Dakota exempts covered farm vehicles from the CDL requirement. What lets law enforcement identify such a vehicle?

4. Which statement about Class 6 on the manual's hazard class table is correct?

5. Your right-side tires buzz over a shoulder rumble strip for the second time in a few minutes. What does the manual say that should tell you?

6. In fog, what does the manual suggest using as a guide to how the road may curve ahead?

7. A South Dakota Seasonal CDL holder generally may not haul placarded quantities of hazardous materials. Which load is one of the exceptions?

8. During the walk-around inspection, what does the manual say to check about license plates at the rear of the vehicle?

9. Which of these, involving road signs, does the manual list as a warning sign of fatigue?

10. A vehicle is too light for its weight alone to call for a CDL, but its cargo requires hazardous materials placards. Does South Dakota require a CDL to drive it?

11. Which of these is an outside-the-vehicle distraction on the manual's list?

12. Which sign marks the railroad grade crossing itself?

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