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Inspection and Maintenance (I/M)
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New St. Louis Region Emissions Testing Requirements
The requirements of the vehicle emissions testing program are changed on Sept. 1. The Department of Natural Resources phased in the new vehicle emissions testing requirements through September and emissions testing began on Monday, Oct. 1. More
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.
Sign Up to Become a GVIP Station 
I/M Legislative Update: August 2007 61 KB PDF
Gateway Vehicle Inspection Program Contract Award Press Release
Presentation to the Missouri Air Conservation Commission (02/02) 18 KB PDF
Progress Report to the General Assembly and the Governor (01/07) 14 KB PDF
Request for Proposals: News Release
Request for Proposals: Gateway Vehicle Inspection Program
Draft Rule: On-Board Diagnostics Motor Vehicle Emissions Inspection 10 CSR 10-5.381
Letter to Repair Industry (10/06) 48 KB PDF
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) PDF
Passed Legislation
SB 583 Sponsored by Sen. Griesheimer
Publications
New I/M Program Design Frequently Asked Questions (12/05) PDF
I/M Summit
In 2005, the department reviewed possible program designs with stakeholders through the Inspection and Maintenance (I/M) 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.
