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Alliance Experts

Michael P. Walsh
Independent Consultant Independent Consultant
Clean Air Asia
International Vehicle Advisory Committee

Michael P. Walsh is a mechanical engineer who has spent his entire career working on motor vehicle pollution control issues at the local, national and international level. For the firsthalf of his career, he was in government service, initially with the City of New York and subsequently with the US Environmental Protection Agency. With each, he served as Directorof their motor vehicle pollution control efforts. Since leaving government, hehas been an independent consultant advising governments and industries around the world. He served as co-chairman of the US EPA’s Mobile Sources Technical AdvisorySubcommittee for the past 12 years and is actively involved in projects in Brazil, Hong Kong, India, Mexico, Thailand, and China. He has been a member of several National Academy of Sciences Committees. He is a recipient of the U.S.Environmental Protection Agency Lifetime Individual Achievement Award, the California Air Resources Board’s “Haagen Smit” award and was selected as a MacArthur Fellow for “extraordinary originality and dedication”. In 2009, he received the Silver Magnolia award for his service to the City of Shanghai. In 2010 he received the Friendship award, the highest award for international experts in China. He is the Founding Chairman of the Board of Directors of theInternational Council on Clean Transportation. In 2012, he co-chaired the CCICED special project regarding Controlling Regional Air Pollution in China.


Selected Papers (Authored or Co-Authored)

1."Air/Fuel Ratio by Exhaust Gas Analysis: Methods and Instrumentation," Cities Service Oil Company, June1969.

2."High Compression-Is It Worth It?" Cities Service Oil Company, July1969.

3."Air Pollution and the Automobile: A Review,"  Cities Service Oil Company, January 1970.

4."The Effect of Heavy Gasoline Components on Exhaust Composition,"  Cities Service OilCompany, May 1970.

5."Evaluation of Standard and Low Compression Vehicles During Mileage Accumulation On Unleaded Fuels," Cities Service Oil Company, December 1970.

6."The Effect of Automotive Emission Requirements On Gasoline Characteristics", Doelling, Gerber and Walsh, ASTM, April 1971

7."Problems Associated With Air Quality Control Region Implementation Plans," Fensterstock, Ketcham and Walsh, The Relationship of Land Use and Transportation Planning to Air Quality Management, Ed. George Hagevik, May1972.

8."New YorkMetropolitan Area Air Quality Implementation Plan: Transportation Controls", April 1973

9."An Evaluation of the Oxidation Catalyst on Light Duty Vehicles",June 1974

10."The Need For And Benefits Of Inspection and Maintenance Programs ForIn-Use Motor Vehicles," EPA, November 1976

11."An Analysis of Alternative Motor Vehicle Emission Standards", U.S. Department of Transportation, Environmental Protection Agency, Federal Energy Administration, May 1977.

12."Emissions From Catalyst Cars Beyond 50,000 Miles And The Implications For The Federal Motor Vehicle Control Program," Walsh and Nussbaum, EPA, SAE Technical Paper Series, Number 780027, February 27-March 3, 1978.

13."The Clean Air Act Amendments and Motor VehicleInspection/ Maintenance,"  Journal ofthe Air Pollution Control Association, Volume 29, Number 3, March 1979.

14."Impact of City Buses on Urban Air Quality," Testimony at Public Hearingof the Standing Committee on Corporations and Authorities, New York City, May 18, 1979

15."Future Trends In The Control Of Emissions From Motor Vehicles",Walsh and Kittredge, SAE # 801359.

16."Health Aspects of Control Devices," Bulletin of the New York Academy of Medicine, Vol.56, Number 9, November-December 1980.

17."Statement of Michael P. Walsh Before the National Commission on Air Quality," November 14, 1980.

18."Analysis of HR #4400 to Amend the Clean Air Act, The 'TraxlerBill',"  MECA, September 15, 1981.

19."Testimony of Michael P. Walsh Presented to the House of Representatives Subcommittee on Health and the Environment," September 21, 1981.

20."Alternative Fuels and Fuel Additives", UNEP/WHO Inter-Regional Workshop On Air Pollution From Motor Vehicles, Moscow,October, 1981

21."Automobile Emission Standards for Carbon Monoxide and Nitrogen Oxides,"  October 28, 1981.

22."Motor Vehicle Emissions of Nitrogen Oxides", A Report to the Office Of Technology Assessment, November 30, 1981.

23."Statement of Michael P. Walsh Before the State of California Air Resources Board, Impact of Increased Diesel-Powered Motor Vehicles in California," March 25, 1982.

24."Point...And Counterpoint, The Case for a One-Gram Auto NOx Standard,"The Environmental Forum, Volume 1, Number 1, May 1982.

25."The Need For and Benefits From Inspection and Maintenance Programs",The Environmental Forum, Volume 1, Number 3, Sept. 1982

26."Discussion Paper On Acid Deposition,"  World Resource Institute, 1982

27."The Benefits and Costs of Light Duty Diesel Particulate Control",SAE Paper 830179, March 1983

28."Issue Paper on Automobile Emission Standards: 1983 Versus1980,"  The University of Toledo Law Review, 1983

29."Draft Environmental Guidelines On The Diesel Vehicle", Clavel and Walsh, United Nations Environment Program, March 1983

30."Motor Vehicle Air Pollution and Lead-Free Gasoline, The United States Experience,"  BEUC and the EEB Conference, May 10,11 1983.

31."The Advantages of Removing Lead From Gasoline and Using Catalytic Converters to Control Vehicle Exhaust Pollution,"  October, 1983.

32."Heavy Duty Trucks and Buses - The Pollution Control Challenge For TheEighties", Air Pollution Control Association Speciality Conference, Kansas City, February,1984.

33."The Costs and Benefits of Diesel Particulate Control II", SAE Paper840177, March 1984.

34."Congress and the Clean Air Act: the Critical Motor Vehicle Issues", Air Pollution Control Association, Government Affairs Seminar, March, 1984.

35.Testimony On The Need For And Benefits of More Stringent Nitrogen Oxides Standards For Automobiles In Canada, before the Sub-Committee On Acid Rain,House of Commons, Canada, March, 1984.

36."Gridlock and the Clean Air Act: The Critical Motor Vehicle Issues",10th Annual North American Motor Vehicle Emissions Control Conference, New York, April, 1984.

37."The U.S.Experience in Motor Vehicle Air Pollution Control - A Regulatory SuccessStory.", Walsh and Howitt, Eighth International Clean Air Conference, Melbourne, Australia,May 1984.

38."Motor Vehicle Emissions Control: Spotlight On The Compliance Program", League of Women Voters Education Fund, July 1984.

39."The Costs and Benefits of Gasohol for Denver, Colorado",State of Colorado Department of Health, December 1984.

40."Motor Vehicle Air Pollution in Brazil", A Report to the Companhia De Technologia De Saneamento Ambiental (CETESB), October 1984.

41."Global Trends in Motor Vehicle Air Pollution Control", SAE # 850148,February 1985.

42."The Benefits and Costs of Diesel Particulate Control III - The UrbanBus", SAE #850148, February 1985.

43."Motor Vehicles and Long Range Transport of Pollutants - A Growing Global Problem", Moore and Walsh, SAE # 851209, May 1985.

44."The U.S.Motor Vehicle Emissions Compliance Program - Should Recall Be Scrapped?",SAE # 851264, May 1985.

45."Other Nations Phasing Down Lead In Gas", EPA Journal, Vol. 11,Number 4, May 1985.

46."Toxic Pollutants From Motor Vehicles", Presented at the Conference On Toxic Air Pollutants, State And Local Air Pollution Administrators, October1985.

47."Worldwide Trends of Diesel Particulate Regulation And The Development Status of Diesel Particulate Control Technologies", Presented in Kawasaki City, Japan, October 1985.

48."Global Trends in Motor Vehicle Air Pollution Control - The Significance for Developing Countries", Presented at Motor Vehicle Technology: MobilityFor Prosperity, Jakarta,November, 1985, SAE # 852221.

49."Worldwide Developments In Motor Vehicle Air Pollution Control: the Significance for Hong Kong and Other Rapidly Developing Urban Areas", Presented at Pollution in the Urban Environment,December 1985.

50."The Benefits and Costs of Diesel Particulate Control IV - The In- UseUrban Bus", SAE # 860295, February 1986.

51."Vehicle Emission Controls: The American Initiative and Its Worldwide Applications", the Eleventh North American Motor Vehicle Emissions Control Conference, April 1986.

52."Motor Vehicle Emissions Control, Technology Transfer to Developing Countries", 79 th Annual Meeting of the Air Pollution Control Association,June 1986.

53."The Commission Proposal for Control of Diesel Particulate: AReview", Prepared for the European Environment Bureau, July 1986.

54."Heavy Duty Trucks and Buses:  The U.S. Programand the Significance For The Federal Republic of Germany",A Report Prepared For The TUV Rheinland Institue Fur Energietechnik Und Umweltschutz, July 1986.

55."Heavy Duty Trucks and Buses:  The U.S. Programand the Significance For Sweden,"A Report to the Swedish Environmental Protection Board, October 1986.

56."Overview and Analysis of Emissions Related Inspection and Maintenance(I/M) Programs For In-Use Vehicles", A Report to the Swedish Environmental Protection Board, December 1986.

57."Options For Reducing Particulate Emissions From Diesel Motor Vehicles In The DenverMetropolitan Area", A Report to the Denver Metropolitan Air Quality Commission, January 5, 1987

58."Alternative Fuels - Prospects for the Year 2000", Presented to The American Public Transit Assoc. Advanced Diesel and Alternative Fuel Engine Workshop, March 19, 1987. (Oral Only)

59."The Benefits and Costs of DieselParticulate Control V Methanol Fuel for the In-Use Urban Bus," Society of Automotive Engineers Paper No. 870013, Warrendale, PA, 1987.

60."The I/M Success Story:  Where Do WeGo from Here?," Society of Automotive Engineers Paper No. 870623, Warrendale, PA,1987.

61.  "Worldwide Developments in Motor Vehicle Pollution Control - A 1987 Overview," Society of Automotive Engineers Paper No. 871072, Warrendale, PA, 1987.

62."Worldwide Developments in Motor Vehicle Pollution Control - The U.S. Experienceand the Significance for the Asia Pacific Region," Presented at the 1987 Asia Pacific Conference on Pollution Control and Clean Air, Singapore,April 28-29, 1987.

63.Carhart, Bruce S. and Michael P. Walsh, "Potential Contributions to Ambient Concentrations of Air Toxics by MobileSources," Presented to the 80th Annual Meeting of APCA, New York, New York,June 24, 1987.

64."Options for Reducing Particulate Emissions From Diesel Motor Vehicles InThe Kuwait Metropolitan Area", A Report to the Kuwait Institute For ScientificResearch, August 15, 1987.

65."Energy and Environmental Issues Related To Transportation", A Report To The World Resources Institute, October 1987.

66."Motor vehicle air pollution in Europe-a problem still not solved", Presented at the Institution of Mechanical Engineers Conference, LondonEngland, November, 1987.

67."The Internationalization of Vehicle Emissions Control Regulation",Presented at the Fourth International Pacific Conference on AutomotiveEngineering, Melbourne, Australia, November, 1987.

68.  "Global Trends in Motor Vehicles andTheir Use Implications for Climate Modification." A Report Prepared forthe World Resources Institute, Dec. 12, 1988.

69.  "Global Trends in Motor Vehicle Pollution Control - A 1988 Perspective." SAE Technical Paper Series,890581, Feb. 27-Mar. 3, 1989.

70.  "Worldwide Developments in Motor Vehicle Diesel Particulate Control." SAE Technical Paper Series  890168 Feb. 27-Mar. 3, 1989.

71.  "Motor Vehicle Pollution Control Presentand Future Problems in Light of the U.S. Experience." Presented atthe Royal Society, London,March 1989.

72.  "The Global Importance of Motor Vehiclesin the Climate Modification Problem." International EnvironmentReporter,May 89.

73.  "Global Warming:  The Implications for Alternative Fuels."SAE Technical Paper Series 891114, May 2-4, 1989.

74.  "Worldwide Developments in Motor Vehicle Diesel Particulate Control." Proceedings of the 8th World Clean Air Congress, September, 1989.

75."The Importance of Fuel Cells to Address The Global Warming Problem",The Grove Anniversary Fuel Cell Symposium, The Royal Institution, London, September 1989.

76."Global Trends In Motor Vehicles And Their Use: Implications For The Localand Global Environment and Energy Consumption", Workshop On New EnergyTechnologies, Transportation and Development, Ottawa, Canada, September 1989.

77."U.S.Auto Fuel Efficiency and Global Warming", MacKenzie and Walsh.

78."Vehicle Pollution Control In Europe: The Local And Global Significance", presented at Highway Pollution, The Third International Symposium, Munich, West Germany, September 1989.

79."The Importance of Fuel Cells to Address the Global WarmingProblem."  Journal of PowerSources Vol. 29 (1990): 13-28.

80.with Jan Karlsson “Motor Vehicle Pollution Control in Asia:  The Lessons of Europe."  SAE Technical Paper Series 900613,February 26 - March 2, 1990.

81."CaliforniaNew Car Standards For Sweden:An Assessment."  Prepared for The Swedish Environmental Protection Board, March 25, 1990.

82."Motor Vehicle Pollution Control - A Global Challenge."  A Report Prepared for the World Bank, Washington, D.C.,May 1990.

83"Motor Vehicle Pollution Control Into the 21st Century."  A Report Prepared for the Norway StatePollution Control Authority, May 1990.

84."Motor Vehicle Pollution In Hungary - A Strategy ForProgress."  A Report Prepared forThe World Bank, June 1990.

85."Risk Assessment/Risk Management of Motor Vehicle  Emissions."  A Report Prepared for Presentation at the 83rd Annual Meeting & Exhibition, Air & Waste Management Association  Pittsburgh, Pennsylvania, June 1990.

86.Faiz, Asif, Kumares Sinha, Michael Walsh and Amiy Varma Automotive Air Pollution- Issues and Options for Developing Countries, Policy, Research, andExternal Affairs Working Papers, Infrastructure and Urban DevelopmentDepartment, The World Bank, Washington, D.C. August 1990.

87."Motor Vehicle Pollution in Developing Countries, A  Programme for Progress."  Paper Prepared for European Transport andPlanning 18th Summer Annual Meeting, Transport and the Environment in Developing Countries, University of  Sussex, England,47-74, September 1990.

88."Motor Vehicle Pollution Control in the US: An Overview."   Paper Presented at the EFOA Fourth Conference, Brussels, Belgium, October 1990.

89."The US Corporate Average Fuel Economy Program, Its Effects and Its Possible Application in Europe."  Prepared for The Commission on Economic Instruments in Environmental Policy, Ministry of Environment and Energy, Stockholm, Sweden,1990.

90."Motor Vehicles and Global Warming." Chapter prepared for the Greenpeace Report, Global Warming, 1990.

91."Driving Forces:  Motor VehicleTrends and their Implications for Global Warming, Energy Strategies, and Transportation Planning," MacKenzie and Walsh, World Resources Institute Report, December 1990.

92."Motor Vehicles and Fuels:  TheProblem," Prepared for the EPA Journal, Volume 17, Number 1,January/February 1991.

93."Motor Vehicle Pollution in Eastern Europe:  A Case Study in Hungary," Dr. Pollack,Dr. Szoboszlai, and Dr. Meterei, M.P. Walsh, SAE Technical Paper Series,# 910107, International Congress and Exposition, Detroit, Michigan, February25-March 1, 1991.

94."Diesel Particulate Control Around the World," Ron Bradow andMichael P. Walsh, SAE Technical Paper Series, # 910130, InternationalCongress and Exposition, Detroit, Michigan February 25-March 1, 1991.

95."The Clean Air Act Amendments: BNA's Comprehensive Analysis of The New Law," S. William Becker,Peter L. de la Cruz, Roger J. Marzulla, Thomas R. Mounteer, Bradley Raffle,Stephen R. Seidel, Douglas Smith, James M. Strock, S. Craig Tautfest, John C.Topping, Jr. and Michael P. Walsh, Washington, DC, 1991.

96."MotorVehicles and the Environment - An Agenda for Rapidly Expanding Countries,"Paper Prepared for Automotive Industry In Expanding Countries Conference Proceedings, SAE Technical Series, # 911726, September 1991.

97."The Polluted Atmosphere - Environmental Challenges Posed by Growing Motor Vehicle Use," Paper prepared for Scania Centennial Jubileum, Transportsand Environment, Sao Paulo, Brazil, September 19, 1991.

98."Global Progress and Problems in Motor Vehicle Pollution Control," SAETechnical Paper Series, # 912422, International Fuels and LubricantsMeeting and Exposition, Toronto, Canada, October 7-10, 1991.

99."Living Dangerously," Chapter Prepared for "Save the Earth"published by Turner Publishing, Inc., 1991.

100."Risk Assessment/Risk Management Of Motor Vehicle Emissions",Published In Toxicology and Industrial Health, An International Journal,Proceedings of the IXth UOEH International Symposium and The First Pan Pacific Cooperative Symposium, Industrialization and Emerging Environmental Health Issues: Risk Assessment and Risk Management, Princeton Scientific PublishingCo., Inc, 1991.

101."Motor Vehicle Regional and Global Trends: Implications for the Environment and Energy Consumption", Centre for Science and Technology forDevelopment, Advanced Technology Assessment System, Issue 6, Autumn 1991,Energy Systems, Environment and Development, A Reader.

102."Urban Transport and the Environment in the Asia-Pacific Region",Proceedings of the IPC-6 Conference, Paper # 912596, October 28, 1991.

103."Transport and the Urban Environment in Asia: Challenges and Opportunities", Polmet '91, Pollution in the Metropolitanand Urban Environment, December, 1991.

104."Motor Vehicle Pollution: The Shrinking World and the Need ForInternational Cooperation", Newsletter, International Association of AirQuality Officials, Issue Number 1.

105.“Control of Emissions From Vehicles in Use: OECD Environment Monographs No.54", Michael P. Walsh, Organization For Economic Co-Operation andDevelopment, Paris1993.

106.“Motor Vehicle Pollution Control in Bangkok:A Strategy for Progress" - Prepared for The Thai Pollution Control Department, May 1994.

107.“Motor Vehicle Pollution Control in Bangkok:A Strategy for Progress, Phase 2" - Prepared for The Thai Pollution Control Department, May 1995.

108.“Vapor Emission from Gasoline Transport, Storage and Refueling in Bangkok - Motor Vehicle Pollution Control in Bangkok: the Need for andBenefits of Vapor Recovery Programs”, submitted to National Energy PolicyOffice, September 1995.

109.“Air Pollution from Motor Vehicles: Standards and Technologies for Controlling Emissions”, co authored with Asif  Faizand Christopher S. Weaver, The World Bank, Washington, D.C., 1996.

110.“Clean Fuels for Asia: Technical Options for Moving toward Unleaded Gasolineand Low-Sulphur Diesel”, co-authored with Jitendra J. Shah, World BankTechnical Paper No. 377, The World Bank, Washington, D.C.`,September 1997.

111.“The Environment from the Standpoint of Motor Vehicle Design”, contained in theJournal of International Association of Traffic and Safety Sciences: IATSSResearch, Volume 21, No.2 1997.

112.“Global Trends in Diesel Emissions Control - A 1997 Update (Reprinted from:Diesel Exhaust Aftertreatment)”, Michael P. Walsh, Society of AutomotiveEngineers, Warrendale, Pa., February 1997.

113.Contributed to “PM Abatement strategy for the Bangkok Metropolitan Area -Volume I - Report”, Radian International LLC, Austin, Texas,February 1997.

114.“Global Trends in Diesel Emissions Control - A 1998 Update (Reprinted From:Diesel Exhaust Aftertreatment, 1998 (SP-1313), Society of Automotive Engineers,Warrendale, Pa. 1998

115. “Urban Traffic Pollution”Contributed Chapter: Motor Vehicle Emission Control Measures,  World Health Organization, 1999.

116. “Urban Traffic Pollution”Co-authored Chapter: Case Studies from Cities Around the World, World Health Organization, 1999.

117. “Global Trends in Diesel Emissions Control - A 1999 Update (Reprinted From: Diesel Exhaust Aftertreatment, 1999,Society of Automotive Engineers, Warrendale, Pa. 1999

118. “Sustainable Transport - The Challenge Ahead”, in Studies in Environmental Science 72, Air Pollution in the21st Century, Priority Issues and Policy, Edited by T. Schneider,Elsevier 1998.

119. "The Tehran Transport Emissions ReductionProject", Journal of Urban Technology, Volume 6, Number 1, 1999.

120. "Assessing Transportation-Related Air Pollution in Major Cities, Journal of Urban Technology, Volume 6, Number 1, 1999.

121. “Motor Vehicle Pollution and itsControl in Asia”, Published in Health and AirPollution in Developing Countries, edited by Gordon McGranahan and FrankMurray, Stockholm Environment Institute, July 1999.

122. “Phasing Lead out of Gasoline: AnExamination of Policy Approaches in Different Countries”, United Nations Environment Program/Organization For Economic Co-Operation and Development,1999.

123. “Older Gasoline Vehicles In Developing Countries and Economies in Transition: Their Importance and the Policy Options for Addressing Them”, United Nations Environment Program/Organization For Economic Co-Operation and Development, 1999.

124. “Motor vehicle pollution and fuelconsumption in China: the long term challenges”, Energy for SustainableDevelopment, the Journal of the International Energy Initiative, Volume VII,No. 4, December 2003.

125. “Oil consumption and CO2 emissions in China’sroad transport, current status, future trends and policy implications”, with He, Hao, Zhang, He, and Wang, Energy Policy, July 2004.

126. “Motor Vehicle Inspection and Maintenance: The Worldwide Experience”, Siat 2005, January 2005.

127. “ControleDa Poluicao Dos Veiculos A Diesel – Uma Estrategia Para O Progresso No Brasil”,editor along with Gabriel Murgel Branco

128. Can Chinacontrol the side effects of motor vehicle growth?, Natural Resources Forum 31(2007) 21-34

129. A Brief History of Motor Vehicle Pollution Control in the United States, the magazine for Environmental Managers, Air and Waste Management Association, June2007

130. The Global Experience With Lead in Gasoline and the Lessons We Should Apply to the Use of MMT, American Journal of Industrial Medicine, Volume 50, Number 11, November2007.

131. Ancillary Benefits for Climate Change Mitigation and Air Pollution Control in the World’s Motor Vehicle Fleets, Annual Review of Public Health, 2008, 29: 1-9.

132.Mobile Source Related Air Pollution: Effects on Health and the Environment. In: Nriagu JO (ed.) Encyclopedia of Environmental Health, volume 3, pp.803–809 Burlington: Elsevier (2011).

133. AutomobileEmissions, Chapter 6 in The Reality ofPrecaution, Comparing Risk Regulation in the United States and Europe, RFFPress 2011.

Relevant experts

Tang Dagang

Vehicle Emission Control Center of MEP

Alan Lloyd

The International Council on Clean Transportation, ICCT

Catherine Witherspoon

Witherspoon Consulting

Christopher A. James

The Regulatory Assistance Project

Piers Forster

University of Leeds

Ray Minjares

The International Council on Clean Transportation, ICCT

Jin Taosheng

College of Environmental Science and Engineering, Nankai University


US Environmental Protection Agency

Dale Evarts

US Environmental Protection Agency

David Vance Wagner

The International Council on Clean Transportation, ICCT