TEXAS VEHICLE EMISSIONS INSPECTOR
LICENSE EXAMINATION COMPLETE
QUESTIONS AND DETAILED SOLUTIONS
LATEST UPDATE THIS YEAR JUST
RELEASED
Exam Coverage Summary
1. Texas Vehicle Emissions Program
o Purpose, legal authority, affected counties, and environmental objectives.
2. Vehicle Identification
o VIN verification, license plate matching, model year determination, fuel type, and emissions
applicability.
3. Inspection Equipment Operation
o Proper use of analyzers, OBD inspection systems, gas caps, opacity meters, and communication
devices.
4. On-Board Diagnostics (OBD-II) Testing
o Readiness monitors, Diagnostic Trouble Codes (DTCs), MIL status, and electronic
communications.
5. Vehicle Inspection Procedures
o Required inspection sequence, safety precautions, and inspection documentation.
6. Emission Control Systems
o Catalytic converters, oxygen sensors, EVAP systems, EGR valves, PCV systems, and air injection
components.
7. Inspector Responsibilities and Ethics
o Fraud prevention, recordkeeping, customer communication, and compliance with Texas
regulations.
8. Inspection Failures and Rejections
o Reasons for rejection, failed inspections, waivers, retesting requirements, and exemptions.
9. Environmental and Health Considerations
o Air pollution, ozone formation, emissions reduction, and public health impacts.
10. Texas Department of Public Safety (DPS) Rules
, Administrative requirements, station responsibilities, inspector licensing, and enforcement procedures.
Question 1
Which statement best explains why Texas requires emissions inspections in
designated counties to improve regional air quality and reduce harmful
vehicle-related pollution?
A. To increase vehicle registration fees collected by counties
B. To reduce emissions contributing to air pollution and help meet federal
clean air standards
C. To measure vehicle fuel economy for insurance purposes
D. To determine annual vehicle resale values
Answer: B
Rationale: Texas emissions inspections help reduce pollutants that contribute
to ozone formation while supporting compliance with federal Clean Air Act
requirements.
Question 2
Before beginning an emissions inspection, which action should the licensed
Texas vehicle emissions inspector complete first to ensure accurate testing
results?
A. Remove the catalytic converter
B. Verify the vehicle identity, registration information, and inspection
eligibility
,C. Disconnect the vehicle battery
D. Inflate all tires
Answer: B
Rationale: Proper vehicle identification prevents testing the wrong vehicle
and ensures correct inspection procedures are applied.
Question 3
Which vehicle component continuously monitors exhaust oxygen levels so
the engine control module can maintain proper air-fuel mixture during
normal operation?
A. Starter motor
B. Oxygen sensor
C. Alternator
D. Fuel tank
Answer: B
Rationale: Oxygen sensors provide continuous exhaust feedback that allows
the engine computer to optimize combustion and emissions.
Question 4
, During an OBD-II emissions inspection, what does an illuminated
Malfunction Indicator Lamp typically indicate regarding the vehicle's
emissions system?
A. The fuel tank is empty
B. One or more emissions-related faults have been detected by the vehicle
computer
C. The tires require balancing
D. The vehicle has passed inspection
Answer: B
Rationale: An illuminated MIL usually indicates stored emissions-related
faults that may result in inspection failure.
Question 5
Why is verifying the Vehicle Identification Number before beginning the
emissions inspection considered an essential inspection responsibility?
A. It determines tire pressure
B. It ensures inspection records correspond to the correct vehicle
C. It measures engine compression
D. It replaces registration verification
Answer: B
LICENSE EXAMINATION COMPLETE
QUESTIONS AND DETAILED SOLUTIONS
LATEST UPDATE THIS YEAR JUST
RELEASED
Exam Coverage Summary
1. Texas Vehicle Emissions Program
o Purpose, legal authority, affected counties, and environmental objectives.
2. Vehicle Identification
o VIN verification, license plate matching, model year determination, fuel type, and emissions
applicability.
3. Inspection Equipment Operation
o Proper use of analyzers, OBD inspection systems, gas caps, opacity meters, and communication
devices.
4. On-Board Diagnostics (OBD-II) Testing
o Readiness monitors, Diagnostic Trouble Codes (DTCs), MIL status, and electronic
communications.
5. Vehicle Inspection Procedures
o Required inspection sequence, safety precautions, and inspection documentation.
6. Emission Control Systems
o Catalytic converters, oxygen sensors, EVAP systems, EGR valves, PCV systems, and air injection
components.
7. Inspector Responsibilities and Ethics
o Fraud prevention, recordkeeping, customer communication, and compliance with Texas
regulations.
8. Inspection Failures and Rejections
o Reasons for rejection, failed inspections, waivers, retesting requirements, and exemptions.
9. Environmental and Health Considerations
o Air pollution, ozone formation, emissions reduction, and public health impacts.
10. Texas Department of Public Safety (DPS) Rules
, Administrative requirements, station responsibilities, inspector licensing, and enforcement procedures.
Question 1
Which statement best explains why Texas requires emissions inspections in
designated counties to improve regional air quality and reduce harmful
vehicle-related pollution?
A. To increase vehicle registration fees collected by counties
B. To reduce emissions contributing to air pollution and help meet federal
clean air standards
C. To measure vehicle fuel economy for insurance purposes
D. To determine annual vehicle resale values
Answer: B
Rationale: Texas emissions inspections help reduce pollutants that contribute
to ozone formation while supporting compliance with federal Clean Air Act
requirements.
Question 2
Before beginning an emissions inspection, which action should the licensed
Texas vehicle emissions inspector complete first to ensure accurate testing
results?
A. Remove the catalytic converter
B. Verify the vehicle identity, registration information, and inspection
eligibility
,C. Disconnect the vehicle battery
D. Inflate all tires
Answer: B
Rationale: Proper vehicle identification prevents testing the wrong vehicle
and ensures correct inspection procedures are applied.
Question 3
Which vehicle component continuously monitors exhaust oxygen levels so
the engine control module can maintain proper air-fuel mixture during
normal operation?
A. Starter motor
B. Oxygen sensor
C. Alternator
D. Fuel tank
Answer: B
Rationale: Oxygen sensors provide continuous exhaust feedback that allows
the engine computer to optimize combustion and emissions.
Question 4
, During an OBD-II emissions inspection, what does an illuminated
Malfunction Indicator Lamp typically indicate regarding the vehicle's
emissions system?
A. The fuel tank is empty
B. One or more emissions-related faults have been detected by the vehicle
computer
C. The tires require balancing
D. The vehicle has passed inspection
Answer: B
Rationale: An illuminated MIL usually indicates stored emissions-related
faults that may result in inspection failure.
Question 5
Why is verifying the Vehicle Identification Number before beginning the
emissions inspection considered an essential inspection responsibility?
A. It determines tire pressure
B. It ensures inspection records correspond to the correct vehicle
C. It measures engine compression
D. It replaces registration verification
Answer: B
