G/TBT/N/MEX/251/Add.2
22 January 2015
(15-0463)  Page: 1/2
Committee on Technical Barriers to Trade  Original: Spanish
 
  NOTIFICATION 
Addendum 
The following communication, dated 19 January 2015, is being circulated at the request of the 
delegation of Mexico. 
 
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Mexican Official Standard NOM-047-SEMARNAT-2014 "establishing the characteristics of the 
equipment and the measuring procedure used to ve rify levels of pollutant emissions from motor 
vehicles using gasoline, liquefied petroleum gas (LPG), natural gas or other alternative fuels" 
On 7 January 2013, the Mexican Ministry of the Environment and Natural Resources published in 
the Official Journal ( Diario Oficial de la Federación ) (http://www.dof.gob.mx ) a draft amendment 
to Mexican Official Standard NOM-047-SEMARNAT-1999 "establishing the characteristics of the 
equipment and the measuring procedure used to ve rify levels of pollutant emissions from motor 
vehicles using gasoline, liquefied petroleum gas (LPG), natural gas or other alternative fuels", in order to enable interested parties to submit their comments, within 60 calendar days following 
its publication, to the enquiry point specified in notification G/TBT/N/MEX/251, which Mexico 
circulated to WTO Members on 16 January 2013. 
The interested parties submitted their comments on the draft and these were analysed by the 
SEMARNAT Committee involved in preparing the st andard. The relevant modifications were made 
and the responses to the comments received were pu blished in the Official Journal on 15 July 2014 
and submitted to the WTO in notificati on G/TBT/N/MEX/251/Add.1 of 17 July 2014. 
The requirements of the Federal Law on Metrology and Standardization having been met, the 
National Advisory Committee on Standardization for the Environment and Natural Resources 
convened in regular session on 1 April 2014 and approved Mexican Official Standard NOM-047-SEMARNAT-2014 "establishing the charac teristics of the equipment and the measuring 
procedure used to verify levels of pollutant emi ssions from motor vehicles using gasoline, liquefied 
petroleum gas (LPG), natural gas or other alternative fuels". 
Pursuant to Article 28.II(d) of the Regulations implementing the Federal Law on Metrology and 
Standardization, the year in the symbol of the standard becomes 2014, because the regulatory 
instrument having been submitted to the National Advisory Committee on Standardization for the 
Environment and Natural Resources for approval in that year, Mexican Official Standard NOM-047-SEMARNAT-2014 was published in the Official Journal on 26 November 2014 and will 
enter into force on 26 January 2015. 
Any comments should be addressed to: Secretaría de Economía 
Subsecretaría de Competitividad y Normatividad 
Dirección General de Normas Tel.: (+52) 55 5229-6100, Ext. 43244 Fax: (+52) 55 5520-9715 
Website: http://www.economia.gob.mx/comuni dad-negocios/competitividad-
normatividad/normalizacion/catalogo-mexicano-de-normas  
Email: normasomc@economia.gob.mx  and sofia.pacheco@economia.gob.mx  G/TBT/N/MEX/251/Add.2 
- 2 - 
  Text available online at: 
http://www.dof.gob.mx/nota_detalle.p hp?codigo=5371998&fecha=26/11/2014  
https://members.wto.org/crnattachments/2015/TBT/MEX/15_0291_00_s.pdf 
 
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