LATEST HIGHWAY CONSTRUCTION
INSPECTION (HCI) – LEVEL I–IV CERTIFICATION
EXAM OFFERED BY NICET | Q&A WITH
RATIONALES
1. What is the primary function of a highway
construction inspector?
A) To operate heavy construction equipment
B) To ensure that construction materials and
workmanship conform to plans and specifications
C) To design roadway alignments
D) To approve contractor payroll
Correct answer: B
Rationale: The highway construction inspector is
responsible for verifying that materials, placement,
and workmanship meet the contract documents,
plans, and specifications. They do not operate
equipment, design, or handle payroll.
2. According to the MUTCD, what color are highway
construction work zone signs?
A) Red
,B) Blue
C) Orange
D) Green
Correct answer: C
Rationale: The Manual on Uniform Traffic Control
Devices (MUTCD) specifies orange as the
background color for temporary traffic control signs
in construction work zones.
3. A technician is performing a field density test on a
compacted soil subgrade using a nuclear gauge.
The gauge reading shows a wet density of 125 pcf
and a moisture content of 12%. What is the dry
density?
A) 110.0 pcf
B) 111.6 pcf
C) 112.0 pcf
D) 113.5 pcf
Correct answer: B
Rationale: Dry density = wet density / (1 + moisture
content/100) = .12 = 111.6 pcf.
,4. Which ASTM standard covers the test method for
density and unit weight of soil in place by the
sand‑cone method?
A) ASTM D1556
B) ASTM D698
C) ASTM D1883
D) ASTM D2216
Correct answer: A
Rationale: ASTM D1556 is the standard test method
for density and unit weight of soil in place by the
sand‑cone method. D698 is Proctor compaction,
D1883 is CBR, and D2216 is moisture content.
5. In a highway construction project, the contractor
is required to submit a quality control plan. The
inspector’s role regarding this plan is to:
A) Write the plan for the contractor
B) Review the plan for compliance with
specifications and monitor its implementation
C) Approve the plan without review
D) Ignore the plan because quality control is the
contractor’s responsibility
, Correct answer: B
Rationale: The inspector must review the
contractor’s quality control plan to ensure it meets
the specifications and then monitor that the plan is
followed during construction.
6. What is the maximum allowable depth of rutting in
an asphalt pavement layer after compaction, per
typical DOT specifications?
A) 1/8 inch
B) 1/4 inch
C) 3/8 inch
D) 1/2 inch
Correct answer: B
Rationale: Most highway specifications limit rutting
to 1/4 inch (6 mm) under a 10‑foot straightedge.
7. A contractor proposes to substitute a different
type of aggregate than specified. The inspector
should:
A) Approve the substitution immediately to keep the
project on schedule
INSPECTION (HCI) – LEVEL I–IV CERTIFICATION
EXAM OFFERED BY NICET | Q&A WITH
RATIONALES
1. What is the primary function of a highway
construction inspector?
A) To operate heavy construction equipment
B) To ensure that construction materials and
workmanship conform to plans and specifications
C) To design roadway alignments
D) To approve contractor payroll
Correct answer: B
Rationale: The highway construction inspector is
responsible for verifying that materials, placement,
and workmanship meet the contract documents,
plans, and specifications. They do not operate
equipment, design, or handle payroll.
2. According to the MUTCD, what color are highway
construction work zone signs?
A) Red
,B) Blue
C) Orange
D) Green
Correct answer: C
Rationale: The Manual on Uniform Traffic Control
Devices (MUTCD) specifies orange as the
background color for temporary traffic control signs
in construction work zones.
3. A technician is performing a field density test on a
compacted soil subgrade using a nuclear gauge.
The gauge reading shows a wet density of 125 pcf
and a moisture content of 12%. What is the dry
density?
A) 110.0 pcf
B) 111.6 pcf
C) 112.0 pcf
D) 113.5 pcf
Correct answer: B
Rationale: Dry density = wet density / (1 + moisture
content/100) = .12 = 111.6 pcf.
,4. Which ASTM standard covers the test method for
density and unit weight of soil in place by the
sand‑cone method?
A) ASTM D1556
B) ASTM D698
C) ASTM D1883
D) ASTM D2216
Correct answer: A
Rationale: ASTM D1556 is the standard test method
for density and unit weight of soil in place by the
sand‑cone method. D698 is Proctor compaction,
D1883 is CBR, and D2216 is moisture content.
5. In a highway construction project, the contractor
is required to submit a quality control plan. The
inspector’s role regarding this plan is to:
A) Write the plan for the contractor
B) Review the plan for compliance with
specifications and monitor its implementation
C) Approve the plan without review
D) Ignore the plan because quality control is the
contractor’s responsibility
, Correct answer: B
Rationale: The inspector must review the
contractor’s quality control plan to ensure it meets
the specifications and then monitor that the plan is
followed during construction.
6. What is the maximum allowable depth of rutting in
an asphalt pavement layer after compaction, per
typical DOT specifications?
A) 1/8 inch
B) 1/4 inch
C) 3/8 inch
D) 1/2 inch
Correct answer: B
Rationale: Most highway specifications limit rutting
to 1/4 inch (6 mm) under a 10‑foot straightedge.
7. A contractor proposes to substitute a different
type of aggregate than specified. The inspector
should:
A) Approve the substitution immediately to keep the
project on schedule
