Alabama Highway Lighting
Contractor Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales
2026 Q&A | Guaranteed Pass|
(GRADED A+)
1. What is the primary purpose of joint sealing in asphalt
pavement?
A. To improve the aesthetic appearance of the pavement
B. To prevent water infiltration and reduce cracking
C. To reduce surface roughness
D. To increase the tensile strength of the asphalt
Answer: B. Joint sealing fills gaps between pavement slabs to
prevent water infiltration, which can cause further deterioration
and cracking.
2. What is the primary purpose of using piles in highway and
street construction?
A. To provide structural support for heavy traffic
B. To prevent soil erosion
C. To reduce the need for excavation
D. To anchor traffic signals
Answer: A. Piles provide deep foundation support for structures
,that will experience heavy traffic loads, especially in areas with
weak or unstable soil.
3. Which of the following types of piles is most commonly
used in highway construction?
A. Timber piles
B. Concrete piles
C. Steel piles
D. Composite piles
Answer: B. Concrete piles are common because they provide high
strength, durability, and resistance to corrosion.
4. What is the main advantage of using pre-cast concrete piles
in construction?
A. Easier installation
B. Reduced cost
C. Ability to bend to fit uneven surfaces
D. Faster curing time
Answer: A. Pre-cast piles are manufactured offsite, allowing for
quicker and more efficient installation than cast-in-place piles.
5. The capacity of a pile to carry loads depends primarily on:
A. The type of pile used
B. The size and shape of the pile
C. The soil conditions around the pile
D. The length of the pile
Answer: C. The load-bearing capacity is greatly influenced by the
soil's characteristics, such as type, density, and compaction.
6. What is the advantage of using steel piles?
A. High corrosion resistance
B. High strength and load-carrying capacity
,C. Low cost
D. Easy to install in weak soils
Answer: B. Steel piles are strong and can carry very high loads,
making them ideal for projects requiring deep foundations.
7. When driving piles, the primary concern regarding the
pile's condition is:
A. Ensuring the pile is aligned properly
B. Preventing the pile from bending or cracking
C. Ensuring the pile is coated with protective paint
D. Monitoring the sound level of pile driving
Answer: B. High stresses from the driving hammer can cause
bending or cracking, which is essential to avoid for maintaining
load-bearing capacity.
8. What is the purpose of a "batter pile" in construction?
A. To resist lateral forces from wind or water
B. To reduce the total number of piles needed
C. To serve as a test pile before installation of others
D. To provide vertical load support only
Answer: A. Batter piles are installed at an angle to resist lateral
forces, such as those from wind or water.
9. Which test is commonly performed to determine the load-
bearing capacity of piles?
A. Vibration test
B. Dynamic load test
C. Compression test
D. Impact test
Answer: B. A dynamic load test involves applying a known load
, and measuring the pile's response to ensure it can withstand the
anticipated load.
10. In the context of asphalt paving, what is a “tack coat”
applied to?
A. The subgrade before base course placement
B. The existing surface before a new overlay to promote adhesion
C. The final surface to improve skid resistance
D. The edges of the pavement to prevent cracking
Answer: B. A tack coat is a thin layer of asphalt emulsion applied
to the old surface to bond the new overlay.
11. The design CBR (California Bearing Ratio) value for a
typical highway subgrade in Alabama is:
A. 5-10%
B. 15-30%
C. 40-60%
D. 70-90%
Answer: B. Most highway subgrades aim for a CBR of 15-30% to
support anticipated traffic loads.
12. Which type of traffic control device is required at a
construction zone where lane closures reduce the roadway to
one lane in each direction?
A. Flashing yellow arrow
B. “Road Closed” sign
C. “Lane Closed” sign with “Detour” arrows
D. “No Parking” sign
Answer: C. The MUTCD requires “Lane Closed” signs with detour
arrows to inform drivers of reduced lanes and alternate routing.
Contractor Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales
2026 Q&A | Guaranteed Pass|
(GRADED A+)
1. What is the primary purpose of joint sealing in asphalt
pavement?
A. To improve the aesthetic appearance of the pavement
B. To prevent water infiltration and reduce cracking
C. To reduce surface roughness
D. To increase the tensile strength of the asphalt
Answer: B. Joint sealing fills gaps between pavement slabs to
prevent water infiltration, which can cause further deterioration
and cracking.
2. What is the primary purpose of using piles in highway and
street construction?
A. To provide structural support for heavy traffic
B. To prevent soil erosion
C. To reduce the need for excavation
D. To anchor traffic signals
Answer: A. Piles provide deep foundation support for structures
,that will experience heavy traffic loads, especially in areas with
weak or unstable soil.
3. Which of the following types of piles is most commonly
used in highway construction?
A. Timber piles
B. Concrete piles
C. Steel piles
D. Composite piles
Answer: B. Concrete piles are common because they provide high
strength, durability, and resistance to corrosion.
4. What is the main advantage of using pre-cast concrete piles
in construction?
A. Easier installation
B. Reduced cost
C. Ability to bend to fit uneven surfaces
D. Faster curing time
Answer: A. Pre-cast piles are manufactured offsite, allowing for
quicker and more efficient installation than cast-in-place piles.
5. The capacity of a pile to carry loads depends primarily on:
A. The type of pile used
B. The size and shape of the pile
C. The soil conditions around the pile
D. The length of the pile
Answer: C. The load-bearing capacity is greatly influenced by the
soil's characteristics, such as type, density, and compaction.
6. What is the advantage of using steel piles?
A. High corrosion resistance
B. High strength and load-carrying capacity
,C. Low cost
D. Easy to install in weak soils
Answer: B. Steel piles are strong and can carry very high loads,
making them ideal for projects requiring deep foundations.
7. When driving piles, the primary concern regarding the
pile's condition is:
A. Ensuring the pile is aligned properly
B. Preventing the pile from bending or cracking
C. Ensuring the pile is coated with protective paint
D. Monitoring the sound level of pile driving
Answer: B. High stresses from the driving hammer can cause
bending or cracking, which is essential to avoid for maintaining
load-bearing capacity.
8. What is the purpose of a "batter pile" in construction?
A. To resist lateral forces from wind or water
B. To reduce the total number of piles needed
C. To serve as a test pile before installation of others
D. To provide vertical load support only
Answer: A. Batter piles are installed at an angle to resist lateral
forces, such as those from wind or water.
9. Which test is commonly performed to determine the load-
bearing capacity of piles?
A. Vibration test
B. Dynamic load test
C. Compression test
D. Impact test
Answer: B. A dynamic load test involves applying a known load
, and measuring the pile's response to ensure it can withstand the
anticipated load.
10. In the context of asphalt paving, what is a “tack coat”
applied to?
A. The subgrade before base course placement
B. The existing surface before a new overlay to promote adhesion
C. The final surface to improve skid resistance
D. The edges of the pavement to prevent cracking
Answer: B. A tack coat is a thin layer of asphalt emulsion applied
to the old surface to bond the new overlay.
11. The design CBR (California Bearing Ratio) value for a
typical highway subgrade in Alabama is:
A. 5-10%
B. 15-30%
C. 40-60%
D. 70-90%
Answer: B. Most highway subgrades aim for a CBR of 15-30% to
support anticipated traffic loads.
12. Which type of traffic control device is required at a
construction zone where lane closures reduce the roadway to
one lane in each direction?
A. Flashing yellow arrow
B. “Road Closed” sign
C. “Lane Closed” sign with “Detour” arrows
D. “No Parking” sign
Answer: C. The MUTCD requires “Lane Closed” signs with detour
arrows to inform drivers of reduced lanes and alternate routing.
