Arkansas CDL — General Knowledge practice
Arkansas CDL — General Knowledge: Road Signs practice test
Learn the shapes, colors, and meanings of regulatory, warning, and guide signs — from stop and yield to construction and school-zone signs.
Content reviewed against official driver handbooks · August 12, 2026
13 questions · pass with 10 correct. You get instant feedback and an explanation after every answer.
Study questions with answers
12 sample Road Signs questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.
Show all 12 questions with answers
1. When do the posted speed limits in a work zone apply?
Correct answer: At all times while approaching and driving through the zone
The manual names speeding as the leading cause of work-zone injuries and deaths. Obey posted limits at all times as you approach and pass through.
Source: Commercial Driver's License Manual — Section 2.6, Controlling Speed
2. How will you know where an escape ramp is on a mountain route?
Correct answer: Signs show drivers where the ramps are located
Escape ramps are built on many steep downgrades to stop runaway vehicles, and signs tell drivers where they are. Learn the ramp locations along your route.
Source: Commercial Driver's License Manual — Section 2.16, Mountain Driving
3. Before a long downgrade, which warning signs should you look for and obey, besides any posted speed?
Correct answer: Signs giving the length and steepness of the grade
Watch for and heed warning signs that show how long and how steep the grade is, along with any speed limit or 'Maximum Safe Speed' sign.
Source: Commercial Driver's License Manual — Section 2.16, Mountain Driving
4. Your road test route has no bridge or overpass. What might the examiner ask you instead?
Correct answer: To identify and explain another traffic sign on the route
After an overpass you may be asked the posted clearance, and after a bridge the posted weight limit. Without those, you may be asked about another sign, so be ready to identify and explain any sign on the route.
Source: Commercial Driver's License Manual — Section 13, On-road Driving
5. Which publication lists hazardous chemicals along with their assigned identification numbers?
Correct answer: The US DOT Emergency Response Guidebook (ERG)
The US DOT Emergency Response Guidebook is where chemicals are listed with their ID numbers.
Source: Commercial Driver's License Manual — Section 2.23, Hazardous Materials Rules For All Commercial Drivers
6. On shipping papers, the four-digit identification number for a hazardous material is preceded by which letters?
Correct answer: NA or UN
Identification numbers are four-digit codes that first responders use; on shipping papers they come after the letters 'NA' or 'UN.' A single number can apply to more than one chemical.
Source: Commercial Driver's License Manual — Section 2.23, Hazardous Materials Rules For All Commercial Drivers
7. In states with move-over laws, how are drivers told about them on the road?
Correct answer: Signs are posted along the roadways
Move-over laws require drivers to slow and change lanes for roadside incidents and emergency vehicles, and states that have them post signs on their roadways.
Source: Commercial Driver's License Manual — Section 2.8, Seeing Hazards
8. Hair spray and charcoal appear as examples of which category on the manual's hazard class table?
Correct answer: ORM-D (Other Regulated Material-Domestic)
The hazard class table lists ORM-D, Other Regulated Material-Domestic, with hair spray and charcoal as examples.
Source: Commercial Driver's License Manual — Section 2.23, Hazardous Materials Rules For All Commercial Drivers
9. A shipment of fireworks falls under which hazard class?
Correct answer: Class 1, explosives
Class 1 is explosives, with examples like ammunition, dynamite, and fireworks. Pesticides are Class 6, uranium is Class 7, and gasoline is Class 3.
Source: Commercial Driver's License Manual — Section 2.23, Hazardous Materials Rules For All Commercial Drivers
10. Propane falls under which hazard class?
Correct answer: Class 2, gases
The hazard class table places propane, oxygen, and helium in Class 2, gases.
Source: Commercial Driver's License Manual — Section 2.23, Hazardous Materials Rules For All Commercial Drivers
11. Can you count on a warning sign being posted before every low bridge or underpass?
Correct answer: No; warnings are often posted, but sometimes they are not
Low bridges and underpasses often carry warnings, but not always. If you doubt you can clear an object, go slowly, and take another route if you aren't sure.
Source: Commercial Driver's License Manual — Section 2.7, Managing Space
12. How do shippers warn dockworkers and drivers about the risk in a hazardous materials package?
Correct answer: Shipping papers plus diamond-shaped labels showing the hazard
Shippers communicate the risk using shipping papers and diamond-shaped hazard labels. Placards on the outside of the vehicle then warn others on the road.
Source: Commercial Driver's License Manual — Section 2.23, Hazardous Materials Rules For All Commercial Drivers
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Every Arkansas question is written from the official Arkansas driver handbook and checked against its current edition. DMV Test Free is a free, independent study resource — not affiliated with any DMV or government agency. About DMV Test Free