TEXAS VEHICLE EMISSIONS INSPECTOR
LICENSE EXAM PREP 2026/2027: 300
PRACTICE QUESTIONS WITH ANSWERS
AND DETAILED RATIONALES |VERIFIED
QUESTION AND ANSWERS PLUS
RATIONALES | 100 % CORRECT |
GRADED A+ | NEWEST!!
Texas Vehicle Emissions Inspector License
Exam — Questions 1 to 300
1. Which Texas agency supervises the vehicle inspection
program?
A. Texas Department of Motor Vehicles
B. Texas Department of Public Safety
C. Texas Commission on Environmental Quality
D. Texas Department of Transportation
Answer: B. Texas Department of Public Safety
Rationale: DPS supervises the Texas vehicle inspection program,
including inspector certification and inspection-station requirements.
2. Which type of inspection remains required for qualifying non-
commercial vehicles registered in Texas emissions counties?
A. Annual safety inspection only
B. Emissions inspection
C. Federal safety inspection only
D. Brake inspection only
Answer: B. Emissions inspection
Rationale: Since January 1, 2025, most non-commercial safety
,inspections were eliminated, but emissions inspections remain
required in designated emissions counties.
3. Which of the following is an emissions county listed by Texas
DPS?
A. Travis County
B. McLennan County
C. Bell County
D. Nueces County
Answer: A. Travis County
Rationale: Travis County is among the Texas counties subject to the
emissions inspection program.
4. According to current Texas DPS information, what testing
method is used for gasoline-powered vehicles from 2 through 24
years old in emissions counties?
A. OBDII
B. Diesel opacity only
C. Brake dynamometer
D. Manual exhaust sampling only
Answer: A. OBDII
Rationale: DPS states that gasoline-powered vehicles from 2 through
24 years old in emissions counties receive an OBDII test.
5. Which component is specifically included among Texas
emissions inspection items?
A. Catalytic converter system
B. Transmission fluid
C. Power steering fluid
D. Battery age
Answer: A. Catalytic converter system
Rationale: DPS lists the catalytic converter system among the
emissions inspection items.
6. What does OBD stand for in vehicle emissions testing?
A. On-Board Diagnostics
,B. Operational Brake Detection
C. Official Battery Diagnostics
D. On-road Brake Data
Answer: A. On-Board Diagnostics
Rationale: OBD refers to the vehicle's onboard diagnostic system
used to monitor emissions-related systems and faults.
7. Which document is identified by DPS as the Vehicle Inspection
Operations & Training Manual – Emissions?
A. VI-81
B. VI-82
C. VI-87A
D. VI-88A
Answer: C. VI-87A
Rationale: DPS identifies VI-87A as the Vehicle Inspection
Operations & Training Manual – Emissions.
8. Which study material is specifically identified by DPS as VI
Emissions Inspections Study Material?
A. VI-81
B. VI-87
C. VI-88A
D. VI-100
Answer: A. VI-81
Rationale: DPS lists VI-81 as the VI Emissions Inspections Study
Material.
9. Which agency certifies emissions-testing equipment for Texas
emissions inspections?
A. TxDOT
B. TCEQ
C. NHTSA
D. EPA only
Answer: B. TCEQ
Rationale: Texas rules require emissions stations to purchase or lease
, emissions-testing equipment certified by the Texas Commission on
Environmental Quality.
10. Which system helps control exhaust gas recirculation?
A. EGR system
B. ABS system
C. SRS system
D. HVAC system
Answer: A. EGR system
Rationale: EGR stands for Exhaust Gas Recirculation and is an
emissions-control system listed in the Texas inspection criteria.
11. What does EGR stand for?
A. Engine Gas Regulation
B. Exhaust Gas Recirculation
C. Electronic Gas Relay
D. Emission Gauge Reading
Answer: B. Exhaust Gas Recirculation
Rationale: EGR is the abbreviation for Exhaust Gas Recirculation.
12. Which system controls gasoline vapors to reduce evaporative
emissions?
A. Evaporative emissions control system
B. Cooling system
C. Lubrication system
D. Steering system
Answer: A. Evaporative emissions control system
Rationale: The evaporative emissions control system is specifically
included in Texas emissions inspection criteria.
13. Which component is commonly associated with preventing
fuel vapors from escaping from the fuel system?
A. Gas cap
B. Alternator
C. Radiator
D. Starter
LICENSE EXAM PREP 2026/2027: 300
PRACTICE QUESTIONS WITH ANSWERS
AND DETAILED RATIONALES |VERIFIED
QUESTION AND ANSWERS PLUS
RATIONALES | 100 % CORRECT |
GRADED A+ | NEWEST!!
Texas Vehicle Emissions Inspector License
Exam — Questions 1 to 300
1. Which Texas agency supervises the vehicle inspection
program?
A. Texas Department of Motor Vehicles
B. Texas Department of Public Safety
C. Texas Commission on Environmental Quality
D. Texas Department of Transportation
Answer: B. Texas Department of Public Safety
Rationale: DPS supervises the Texas vehicle inspection program,
including inspector certification and inspection-station requirements.
2. Which type of inspection remains required for qualifying non-
commercial vehicles registered in Texas emissions counties?
A. Annual safety inspection only
B. Emissions inspection
C. Federal safety inspection only
D. Brake inspection only
Answer: B. Emissions inspection
Rationale: Since January 1, 2025, most non-commercial safety
,inspections were eliminated, but emissions inspections remain
required in designated emissions counties.
3. Which of the following is an emissions county listed by Texas
DPS?
A. Travis County
B. McLennan County
C. Bell County
D. Nueces County
Answer: A. Travis County
Rationale: Travis County is among the Texas counties subject to the
emissions inspection program.
4. According to current Texas DPS information, what testing
method is used for gasoline-powered vehicles from 2 through 24
years old in emissions counties?
A. OBDII
B. Diesel opacity only
C. Brake dynamometer
D. Manual exhaust sampling only
Answer: A. OBDII
Rationale: DPS states that gasoline-powered vehicles from 2 through
24 years old in emissions counties receive an OBDII test.
5. Which component is specifically included among Texas
emissions inspection items?
A. Catalytic converter system
B. Transmission fluid
C. Power steering fluid
D. Battery age
Answer: A. Catalytic converter system
Rationale: DPS lists the catalytic converter system among the
emissions inspection items.
6. What does OBD stand for in vehicle emissions testing?
A. On-Board Diagnostics
,B. Operational Brake Detection
C. Official Battery Diagnostics
D. On-road Brake Data
Answer: A. On-Board Diagnostics
Rationale: OBD refers to the vehicle's onboard diagnostic system
used to monitor emissions-related systems and faults.
7. Which document is identified by DPS as the Vehicle Inspection
Operations & Training Manual – Emissions?
A. VI-81
B. VI-82
C. VI-87A
D. VI-88A
Answer: C. VI-87A
Rationale: DPS identifies VI-87A as the Vehicle Inspection
Operations & Training Manual – Emissions.
8. Which study material is specifically identified by DPS as VI
Emissions Inspections Study Material?
A. VI-81
B. VI-87
C. VI-88A
D. VI-100
Answer: A. VI-81
Rationale: DPS lists VI-81 as the VI Emissions Inspections Study
Material.
9. Which agency certifies emissions-testing equipment for Texas
emissions inspections?
A. TxDOT
B. TCEQ
C. NHTSA
D. EPA only
Answer: B. TCEQ
Rationale: Texas rules require emissions stations to purchase or lease
, emissions-testing equipment certified by the Texas Commission on
Environmental Quality.
10. Which system helps control exhaust gas recirculation?
A. EGR system
B. ABS system
C. SRS system
D. HVAC system
Answer: A. EGR system
Rationale: EGR stands for Exhaust Gas Recirculation and is an
emissions-control system listed in the Texas inspection criteria.
11. What does EGR stand for?
A. Engine Gas Regulation
B. Exhaust Gas Recirculation
C. Electronic Gas Relay
D. Emission Gauge Reading
Answer: B. Exhaust Gas Recirculation
Rationale: EGR is the abbreviation for Exhaust Gas Recirculation.
12. Which system controls gasoline vapors to reduce evaporative
emissions?
A. Evaporative emissions control system
B. Cooling system
C. Lubrication system
D. Steering system
Answer: A. Evaporative emissions control system
Rationale: The evaporative emissions control system is specifically
included in Texas emissions inspection criteria.
13. Which component is commonly associated with preventing
fuel vapors from escaping from the fuel system?
A. Gas cap
B. Alternator
C. Radiator
D. Starter
