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In-use emissions testing in Mexico

Explore the evolution of emissions testing in Mexico, from inception to recent changes, highlighting challenges faced and lessons learned. Recommendations provided to enhance program effectiveness and overall control. Contact John Rogers for more information.

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In-use emissions testing in Mexico

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  1. In-use emissions testing in Mexico John Rogers jrogers@trafalgar-mexico.com

  2. Mexico City’s History 1982 Voluntary Inspection program 1988 Obligatory annual emissions inspection for 1982 and earlier vehicles 1992 Obligatory Test for all vehicles 1993 Multi-lane “Macro-centers” are opened. Dynamometer test introduced for intensive-usage vehicles. 1996 Test & Repair centers closed.

  3. Test & Repair Very convenient for vehicle owners But • 50 percent of vehicles obtained their approval certificate fraudulently. • Public Opinion => a highly faulted emissions control program

  4. Lessons Learnt • Must be seen by Public to be • effective, • totally objective, • transparent and • control gross polluters • Focus on dirtiest vehicles • Use Good Test Procedure • Enforced, supervised and audited • False Passes damage public acceptance

  5. Gasoline & Gas Protocols • Test-only allows good technical and administrative controls • Dynamometers essential • Easy to cause False Pass on Static Tests • Only way to test for NOx • Short loaded-mode, constant-speed test (ASM) easy to operate and accessible in investment and cost • Additional controls needed

  6. Verificentro

  7. Improved user friendliness

  8. Social memory is long Has anyone ever asked you for money for your vehicle to pass the test? Survey Reforma 8 Nov 2003 Indicator of Program effectiveness is the cost of false-pass

  9. Recent Changes • Digital Video via Internet • Near real-time data transmission • Computer-based remote auditing • Strengthened legal framework and sanctions • More rigorous center audits • Better control on instrument calibration

  10. Recommended lines of action • Regarding Testing • Dynamometer-based diesel test procedure • Dynamometer tests for AWD and ATC vehicles • Consider adding Motorcycles • Wait on OBDII inspections • Regarding Administration • Strengthen real-time remote auditing • Real-time data on Internet for transparency • Stronger QA/QC • Frequent evaluations of program effectiveness • Unified government owned software required

  11. Thank you John Rogers t , I . jrogers@trafalgar-mexico.com

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