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2008 Enhanced I/M Program Annual Report and 2007-08 Biennial Report

Executive Summary

Complete downloadable report PDF (321 kb, 89 pgs)

The United States Environmental Protection Agency (USEPA or EPA) has defined the reporting requirements for motor vehicle Inspection/Maintenance (I/M) programs in 40 CFR Part 51.366. The I/M program for the State of New York (the "State", or "NYS") is jointly administered by the New York State Department of Environmental Conservation (NYSDEC) and the Department of Motor Vehicles (NYSDMV). This report reflects the coordinated effort between the two agencies to administer the program and is being submitted to the EPA to fulfill the State's annual reporting requirements for the calendar year of 2008. The biennial report addresses program changes made during the period of January 1, 2007 to December 31, 2008.

In the nine (9) counties of the New York Metropolitan Area (NYMA), the State has administered an I/M program based on an idle test since 1981. A high-enhanced I/M program using a mass emission transient test, referred to as the New York Transient Emission Short Test ("NYTEST"), has been in place since 1998. On April 1, 2005, the State commenced an on-board-diagnostic (OBD) II-based vehicle inspection program, referred to as the New York Vehicle Inspection Program ("NYVIP"). By May 5, 2005 all testing facilities in NYMA were required to conduct OBD II inspections for all applicable 1996-and-later model year light duty vehicles (LDVs) and light duty trucks (LDTs). During calendar year 2008, more than 4.9 million vehicles were registered within NYMA, of which 3,789,361 (75.96% of the total registered) were emissions- tested, and 3,144,772 (82.99% of the emissions-tested vehicles) had OBD II inspections.

Since 1998, an ozone transport region (OTR) low-enhanced I/M program has been operating in the remaining fifty-three (53) counties of New York (Upstate New York). On December 1, 2004, the State fully implemented the OBD II-based NYVIP in Upstate New York. This allowed for the inclusion of all Upstate vehicles into the State's I/M program database. In calendar year 2008, more than 5.2 million vehicles and trucks were registered in the Upstate I/M area, and 3,431,393 of them (or 64.97%) received OBD II inspections.

Pursuant to a Consent Order filed on September 6, 1977, all yellow medallion taxi cabs operating in New York City, under the jurisdiction of the New York City Taxi Limousine Commission (NYCTLC, or TLC), are required to be emissions-tested on a three-times-per-year basis. Beginning in 1981, the TLC vehicles were subject to idle testing. Following upgrades to their Woodside testing facility, the TLC commenced an OBD II inspection program for their taxi fleet on December 8, 2003. This program continued in 2008 for their fleet of 15,048 vehicles (11,917 LDVs and 3,131 LDTs), with a total 37,642 OBD II inspections performed.

New York will maintain and implement measures consistent with the SIP in order to achieve its intended goal: Clean air for the residents of the State of New York.


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  • NYSDEC
    Division of Air Resources
    Vehicle I/M Program
    625 Broadway
    Albany, NY 12233-3259
    518-402-8402
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