What Does A Missouri Inspection Include?
Vehicle inspections are a crucial aspect of maintaining road safety and ensuring that all vehicles on the road are in good operating condition. In Missouri, vehicle inspections are mandatory for certain vehicles and involve a series of checks and tests. This comprehensive guide explores what a Missouri vehicle inspection includes, detailing each component to help vehicle owners understand what to expect and ensure their vehicles comply with state regulations.
Overview of Missouri Vehicle Inspections
Missouri vehicle inspections can be categorized into two main types: safety inspections and emissions inspections. Safety inspections are required statewide, while emissions inspections are mandatory in certain regions, particularly areas with high population density and significant air pollution levels, such as the St. Louis metropolitan area.
Components of a Safety Inspection
1. Brakes
Functionality and Efficiency: Inspectors check the brake system, including the brake pads, rotors, calipers, and lines, to ensure they are in good working condition. The brakes must effectively stop the vehicle within a safe distance.
Example: Owners will fail the inspection if there are worn-out brake pads or leaking brake lines, as these could lead to brake failure.
2. Headlights, Taillights, and Turn Signals
Lighting and Indicator Systems: All exterior lights, including headlights, taillights, brake lights, and turn signals, are checked for proper operation, brightness, and alignment. Reflectors are also inspected to ensure visibility.
Example: A vehicle with a broken headlight or a malfunctioning turn signal will need to replace these components to pass the inspection.
3. Steering Mechanism
Steering Control and Safety: The steering system, including the steering wheel, column, and linkages, is examined for wear, looseness, and proper function. Excessive play or binding can result in a failed inspection.
Example: If a car's steering wheel has too much free play or the steering system is binding, these issues must be corrected to ensure safe vehicle control.
4. Tires and Wheels
Tread Depth and Condition: Tires are checked for adequate tread depth, even wear, and overall condition. Inspectors also look for any signs of damage, such as cuts, bulges, or mismatched tires.
Example: Vehicles with bald or unevenly worn tires will not pass the inspection and will require tire replacement for safe operation.
5. Windshield and Windows
Visibility and Integrity: The windshield and windows are inspected for cracks, chips, and visibility issues. Specific attention is given to the driver's line of sight, ensuring there are no obstructions.
Example: A crack in the driver's line of sight or a seriously damaged windshield will need to be repaired or replaced to pass the inspection.
6. Horn
Audibility and Function: The horn must be loud enough to be heard from a reasonable distance and function properly when engaged.
Example: A non-functional or faint horn needs to be repaired to ensure the vehicle can alert other road users when necessary.
7. Mirrors
Position and Condition: Both side mirrors and the rearview mirror are checked for proper positioning, visibility, and absence of damage.
Example: A missing or cracked mirror must be replaced to ensure adequate visibility and pass the inspection.
8. Exhaust System
Leaks and Emissions: Inspectors examine the exhaust system for leaks, proper mounting, and overall condition. The system must effectively channel exhaust gases away from the vehicle's interior and comply with emission standards.
Example: An exhaust leak or malfunctioning catalytic converter will require repair to meet safety and emissions standards.
9. Windshield Wipers and Washers
Efficiency and Coverage: The wiper blades and washer system are tested to ensure they effectively clear the windshield for improved visibility during adverse weather conditions.
Example: Worn-out wiper blades or a non-functional washer system should be replaced for adequate visibility and compliance.
10. Seat Belts
Condition and Operation: All seat belts are examined to ensure they are free of damage and function correctly, including retractors and buckles.
Example: Frayed, damaged, or non-functional seat belts need to be repaired or replaced for passenger safety.
Components of an Emissions Inspection
1. On-Board Diagnostics (OBD)
Computerized Testing: Vehicles manufactured after 1996 are equipped with an OBD system that monitors engine performance and emissions controls. Inspectors connect to the OBD system to check for emission-related trouble codes.
Example: If the OBD system detects a problem, such as a malfunctioning oxygen sensor, the vehicle will need repairs to pass the emissions inspection.
2. Tailpipe Emissions Testing
Emissions Levels: For older vehicles or those without OBD systems, a tailpipe emissions test measures the levels of pollutants being emitted. This ensures the vehicle meets state and federal emission standards.
Example: Vehicles emitting excessive levels of pollutants, such as carbon monoxide and hydrocarbons, will require repairs to reduce emissions and pass the inspection.
3. Gas Cap Check
Sealing and Vacuum: The gas cap is tested to ensure it seals properly and maintains the correct pressure within the fuel tank, preventing fuel vapor leaks.
Example: A faulty gas cap that fails the sealing test will need to be replaced to pass the emissions inspection.
Additional Considerations
1. Exemptions and Special Cases
Exemptions: Certain vehicles are exempt from Missouri's safety and emissions inspections. These include vehicles less than five years old, historic vehicles, and vehicles that are primarily used for agricultural purposes. Knowing if your vehicle qualifies for an exemption can save you time and effort.
Special Cases: Some situations require additional inspections, such as when selling a vehicle or after a major repair. Understanding these requirements ensures compliance with state laws and regulations.
2. Frequency of Inspections
Regular Inspections: Missouri requires regular vehicle inspections for most vehicles every two years. This ensures that vehicles remain in safe operating condition and continue to meet emissions standards.
New Residents: If you move to Missouri, you must have your vehicle inspected and registered within 30 days. New residents should be aware of these requirements to avoid legal issues.
Conclusion
Missouri vehicle inspections play a vital role in ensuring road safety and environmental protection. By understanding the specific components of safety and emissions inspections, vehicle owners can better prepare for the process and maintain their vehicles in good condition.