AK Roadway Construction Contractor Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
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Question 1
Before beginning roadway excavation, what is the most important first
step concerning existing underground utilities?
a. Begin excavation slowly with heavy equipment
b. Obtain the project schedule from the paving subcontractor
c. Verify utility locations and markings through the required utility-
locate process
d. Remove all pavement along the proposed excavation line
Rationale: Verifying underground utility locations before excavation
helps prevent damage to electrical, gas, water, communications, and
other buried systems. Utility locating and appropriate field
verification should occur before mechanical excavation begins.
,Question 2
What is the primary purpose of a roadway construction project’s traffic-
control plan?
a. To determine the asphalt mix design
b. To calculate equipment fuel consumption
c. To protect workers and road users while maintaining safe traffic
movement through the work zone
d. To establish the contractor’s profit margin
Rationale: A traffic-control plan establishes how vehicles, pedestrians,
workers, and construction equipment will interact within and around
the work zone. Proper planning reduces conflicts and provides
predictable movement through changing roadway conditions.
Question 3
Which material is commonly used as a roadway subbase?
a. Finish-grade asphalt
b. Topsoil containing organic matter
c. Well-graded granular material
d. Untreated wood waste
Rationale: Granular subbase materials provide structural support,
distribute traffic loads, and can facilitate drainage. Materials
,containing significant organic matter are generally unsuitable for
structural roadway layers.
Question 4
What is the primary purpose of roadway compaction?
a. Increase the amount of air in the soil
b. Reduce the pavement thickness
c. Increase soil or aggregate density and improve its load-bearing
characteristics
d. Eliminate the need for drainage
Rationale: Compaction reduces unwanted air voids and increases
material density. Properly compacted roadway layers generally
provide greater stability and resistance to settlement under traffic.
Question 5
A contractor discovers that the existing subgrade is saturated and
unstable. What is the most appropriate response?
a. Place asphalt directly over the wet area
b. Ignore the condition if the surface appears level
c. Evaluate the unsuitable material and follow the project
requirements for correction or replacement
d. Add topsoil to absorb the water
, Rationale: Saturated or unstable subgrade can cause rutting,
settlement, and pavement failure. The appropriate correction depends
on the specifications and may include removal, replacement,
stabilization, drainage improvement, or other approved treatment.
Question 6
What does the term “subgrade” generally refer to in roadway
construction?
a. The finished asphalt wearing surface
b. The pavement markings
c. The prepared soil surface supporting the pavement structure
d. The roadside vegetation
Rationale: The subgrade is the prepared foundation on which the
roadway’s structural layers are constructed. Its strength, moisture
condition, and uniformity have a major effect on pavement
performance.
Question 7
Why are roadway grades and elevations carefully established before
paving?
a. To determine the color of pavement markings
b. To reduce the number of construction workers
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
Download Pdf
Question 1
Before beginning roadway excavation, what is the most important first
step concerning existing underground utilities?
a. Begin excavation slowly with heavy equipment
b. Obtain the project schedule from the paving subcontractor
c. Verify utility locations and markings through the required utility-
locate process
d. Remove all pavement along the proposed excavation line
Rationale: Verifying underground utility locations before excavation
helps prevent damage to electrical, gas, water, communications, and
other buried systems. Utility locating and appropriate field
verification should occur before mechanical excavation begins.
,Question 2
What is the primary purpose of a roadway construction project’s traffic-
control plan?
a. To determine the asphalt mix design
b. To calculate equipment fuel consumption
c. To protect workers and road users while maintaining safe traffic
movement through the work zone
d. To establish the contractor’s profit margin
Rationale: A traffic-control plan establishes how vehicles, pedestrians,
workers, and construction equipment will interact within and around
the work zone. Proper planning reduces conflicts and provides
predictable movement through changing roadway conditions.
Question 3
Which material is commonly used as a roadway subbase?
a. Finish-grade asphalt
b. Topsoil containing organic matter
c. Well-graded granular material
d. Untreated wood waste
Rationale: Granular subbase materials provide structural support,
distribute traffic loads, and can facilitate drainage. Materials
,containing significant organic matter are generally unsuitable for
structural roadway layers.
Question 4
What is the primary purpose of roadway compaction?
a. Increase the amount of air in the soil
b. Reduce the pavement thickness
c. Increase soil or aggregate density and improve its load-bearing
characteristics
d. Eliminate the need for drainage
Rationale: Compaction reduces unwanted air voids and increases
material density. Properly compacted roadway layers generally
provide greater stability and resistance to settlement under traffic.
Question 5
A contractor discovers that the existing subgrade is saturated and
unstable. What is the most appropriate response?
a. Place asphalt directly over the wet area
b. Ignore the condition if the surface appears level
c. Evaluate the unsuitable material and follow the project
requirements for correction or replacement
d. Add topsoil to absorb the water
, Rationale: Saturated or unstable subgrade can cause rutting,
settlement, and pavement failure. The appropriate correction depends
on the specifications and may include removal, replacement,
stabilization, drainage improvement, or other approved treatment.
Question 6
What does the term “subgrade” generally refer to in roadway
construction?
a. The finished asphalt wearing surface
b. The pavement markings
c. The prepared soil surface supporting the pavement structure
d. The roadside vegetation
Rationale: The subgrade is the prepared foundation on which the
roadway’s structural layers are constructed. Its strength, moisture
condition, and uniformity have a major effect on pavement
performance.
Question 7
Why are roadway grades and elevations carefully established before
paving?
a. To determine the color of pavement markings
b. To reduce the number of construction workers
