Air Pollution Control Program

Inspection and Maintenance (I/M)

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New St. Louis Region Emissions Testing Requirements

The Gateway Vehicle Inspection Program tests all 1996 and newer gas-powered vehicles and 1997 and newer diesel-powered vehicles under 8,500 pounds registered in the St. Louis nonattainment area. More

The Gateway Vehicle Inspection Program is a key component of the ongoing effort to improve air quality in the St. Louis region.

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I/M Legislative Update: August 2007

Presentation to the Missouri Air Conservation Commission (02/02)

Progress Report to the General Assembly and the Governor (01/07)

Draft Rule: On-Board Diagnostics Motor Vehicle Emissions Inspection 10 CSR 10-5.381

Letter to Repair Industry (10/06)

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Greater St. Louis Area Vehicle Repair Industry Survey

During the 2006 Missouri General Assembly, legislation was passed to change the vehicle emissions inspection and maintenance (I/M) program in St. Louis. We surveyed the vehicle repair industry to gather input on design options for the new program. A copy of the survey and its results can be found in the links below. The information that was compiled will be considered in the planning of the next I/M program. Proposed changes will take effect in September 2007.

Repair Industry Survey 

Repair Industry Survey Results (08/06)

Passed Legislation

SB 583  Sponsored by Sen. Griesheimer

I/M Summit

In 2005, the department reviewed possible program designs with stakeholders through the Inspection and Maintenance Summit. The summit participants included St. Louis community leaders and members of industry groups, environmental groups, the automotive sales and service industry, other affected state agencies and state legislators who had sponsored or co-sponsored legislation to change the emissions testing program.

Draft I/M Summit White Paper

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