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PENNSYLVANIA EMISSIONS INSPECTOR CERTIFICATION EXAM
QUESTIONS LATEST VERSION 2026 - 2027
Pennsylvania Emissions Inspector Certification Exam
Summarized 10-Point Exam Coverage
1. Program Regulations and Administration: State and federal oversight,
certification types, and legal requirements.
2. Vehicle Applicability and Exemptions: Subject and non-subject vehicles,
GVWR, and exemption criteria.
3. Inspector Roles and Responsibilities: Scope of practice, age and licensing
requirements, and waiver procedures.
4. Emissions Testing Procedures: OBDII, Two-Speed Idle, ASM5015, and gas cap
testing.
5. Visual Anti-Tampering Inspection: Catalyst, EGR, AIR, and evaporative system
checks.
6. Emission Control Systems and Components: Function and diagnosis of
catalytic converters, EGR, EVAP, and O2 sensors.
7. Five-Gas Theory and Exhaust Analysis: HC, CO, NOx, O2, and CO2
relationships.
8. Sticker and Documentation Procedures: Sticker issuance, repair data forms,
and record-keeping.
9. Safety and Equipment Maintenance: PPE, analyzer calibration, and leak
checks.
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10. Quality Control and Audits: QA/QC procedures, referee tests, and PennDOT
oversight.
Section 1: Program Regulations and Administration (Questions 1–12)
1. Which of the following state agencies is responsible for overseeing the vehicle
emissions inspection program in Pennsylvania?
A. Pennsylvania Department of Transportation (PennDOT)
B. Pennsylvania Department of Environmental Protection (DEP)
C. Pennsylvania State Police
D. Pennsylvania Department of Health
Correct Answer: A
Rationale: PennDOT is the state agency responsible for administering and overseeing
the Pennsylvania vehicle emissions inspection program, including inspector
certification and station licensing.
2. Which of the following federal laws mandates vehicle emissions inspection and
maintenance programs in areas that do not meet air quality standards?
A. The Clean Water Act
B. The Clean Air Act
C. The Motor Vehicle Safety Act
D. The Energy Policy Act
Correct Answer: B
Rationale: The Clean Air Act sets the framework for air quality regulations and
mandates inspection/maintenance (I/M) programs in non-attainment areas to reduce
vehicle emissions.
3. In which year did Pennsylvania implement its enhanced emissions inspection
program, which includes OBDII testing for 1996 and newer vehicles?
A. 1990
B. 1997
C. 2001
D. 1995
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Correct Answer: B
Rationale: Pennsylvania implemented its enhanced emissions inspection program in
1997, incorporating OBDII testing for 1996 and newer vehicles.
4. How many counties in Pennsylvania are currently designated as part of the emissions
testing program?
A. 67
B. 42
C. 25
D. 15
Correct Answer: C
Rationale: While Pennsylvania has 67 counties, only 25 counties—primarily in
metropolitan areas like Philadelphia and Pittsburgh—require emissions testing.
5. A new resident to Pennsylvania must register their vehicle within how many days and
have it emissions tested within how many days of registration?
A. 10 days, 20 days
B. 30 days, 10 days
C. 20 days, 10 days
D. 10 days, 10 days
Correct Answer: C
Rationale: New residents must register their vehicle within 20 days. The emissions test
must be completed within 10 days of registration.
6. What is the name of the official website that inspectors must use to find the most up-
to-date program information, changes, and updates?
A. PennDOT Portal
B. PA Training Portal
C. Drive Clean PA
D. EPA.gov
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Correct Answer: C
Rationale: The Drive Clean PA website is the primary resource for all program updates,
forms, and technical information for certified inspectors.
7. A customer fails the emissions test and wishes to challenge the result. How many
days do they have to request a referee test?
A. 5 days
B. 10 days
C. 20 days
D. 30 days
Correct Answer: B
Rationale: If a customer disputes a test result, they have 10 days to request an official
referee test to verify the outcome.
8. Which of the following individuals is the only authorized person who can deliver a
waiver after a vehicle fails its emissions test?
A. The Emissions Inspector
B. The Station Owner
C. A Certified Repair Technician (CRT)
D. The PennDOT Auditor
Correct Answer: C
Rationale: A waiver signifies that a certified repair technician (CRT) has attempted but
failed to bring the vehicle into compliance after a minimum expenditure. Only a CRT can
deliver a waiver.
9. Which of the following certification types allows an inspector to perform a visual anti-
tampering check and gas cap test only, limited to the Northern Region counties?
A. Emission Inspector
B. Northern Region Emission Inspector
C. Emission Repair Technician
D. Certified Repair Technician
PENNSYLVANIA EMISSIONS INSPECTOR CERTIFICATION EXAM
QUESTIONS LATEST VERSION 2026 - 2027
Pennsylvania Emissions Inspector Certification Exam
Summarized 10-Point Exam Coverage
1. Program Regulations and Administration: State and federal oversight,
certification types, and legal requirements.
2. Vehicle Applicability and Exemptions: Subject and non-subject vehicles,
GVWR, and exemption criteria.
3. Inspector Roles and Responsibilities: Scope of practice, age and licensing
requirements, and waiver procedures.
4. Emissions Testing Procedures: OBDII, Two-Speed Idle, ASM5015, and gas cap
testing.
5. Visual Anti-Tampering Inspection: Catalyst, EGR, AIR, and evaporative system
checks.
6. Emission Control Systems and Components: Function and diagnosis of
catalytic converters, EGR, EVAP, and O2 sensors.
7. Five-Gas Theory and Exhaust Analysis: HC, CO, NOx, O2, and CO2
relationships.
8. Sticker and Documentation Procedures: Sticker issuance, repair data forms,
and record-keeping.
9. Safety and Equipment Maintenance: PPE, analyzer calibration, and leak
checks.
, Page 2 of 34
10. Quality Control and Audits: QA/QC procedures, referee tests, and PennDOT
oversight.
Section 1: Program Regulations and Administration (Questions 1–12)
1. Which of the following state agencies is responsible for overseeing the vehicle
emissions inspection program in Pennsylvania?
A. Pennsylvania Department of Transportation (PennDOT)
B. Pennsylvania Department of Environmental Protection (DEP)
C. Pennsylvania State Police
D. Pennsylvania Department of Health
Correct Answer: A
Rationale: PennDOT is the state agency responsible for administering and overseeing
the Pennsylvania vehicle emissions inspection program, including inspector
certification and station licensing.
2. Which of the following federal laws mandates vehicle emissions inspection and
maintenance programs in areas that do not meet air quality standards?
A. The Clean Water Act
B. The Clean Air Act
C. The Motor Vehicle Safety Act
D. The Energy Policy Act
Correct Answer: B
Rationale: The Clean Air Act sets the framework for air quality regulations and
mandates inspection/maintenance (I/M) programs in non-attainment areas to reduce
vehicle emissions.
3. In which year did Pennsylvania implement its enhanced emissions inspection
program, which includes OBDII testing for 1996 and newer vehicles?
A. 1990
B. 1997
C. 2001
D. 1995
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Correct Answer: B
Rationale: Pennsylvania implemented its enhanced emissions inspection program in
1997, incorporating OBDII testing for 1996 and newer vehicles.
4. How many counties in Pennsylvania are currently designated as part of the emissions
testing program?
A. 67
B. 42
C. 25
D. 15
Correct Answer: C
Rationale: While Pennsylvania has 67 counties, only 25 counties—primarily in
metropolitan areas like Philadelphia and Pittsburgh—require emissions testing.
5. A new resident to Pennsylvania must register their vehicle within how many days and
have it emissions tested within how many days of registration?
A. 10 days, 20 days
B. 30 days, 10 days
C. 20 days, 10 days
D. 10 days, 10 days
Correct Answer: C
Rationale: New residents must register their vehicle within 20 days. The emissions test
must be completed within 10 days of registration.
6. What is the name of the official website that inspectors must use to find the most up-
to-date program information, changes, and updates?
A. PennDOT Portal
B. PA Training Portal
C. Drive Clean PA
D. EPA.gov
, Page 4 of 34
Correct Answer: C
Rationale: The Drive Clean PA website is the primary resource for all program updates,
forms, and technical information for certified inspectors.
7. A customer fails the emissions test and wishes to challenge the result. How many
days do they have to request a referee test?
A. 5 days
B. 10 days
C. 20 days
D. 30 days
Correct Answer: B
Rationale: If a customer disputes a test result, they have 10 days to request an official
referee test to verify the outcome.
8. Which of the following individuals is the only authorized person who can deliver a
waiver after a vehicle fails its emissions test?
A. The Emissions Inspector
B. The Station Owner
C. A Certified Repair Technician (CRT)
D. The PennDOT Auditor
Correct Answer: C
Rationale: A waiver signifies that a certified repair technician (CRT) has attempted but
failed to bring the vehicle into compliance after a minimum expenditure. Only a CRT can
deliver a waiver.
9. Which of the following certification types allows an inspector to perform a visual anti-
tampering check and gas cap test only, limited to the Northern Region counties?
A. Emission Inspector
B. Northern Region Emission Inspector
C. Emission Repair Technician
D. Certified Repair Technician
