Talk:Vehicle emission standard

Environmental law
This page is related to Environmental law, air quality law subtopic. Template and hatnote added.Ado2102 (talk) 22:37, 28 September 2014 (UTC)

Where is comparison of the safety and emission standards per country?
Can you please find the safety and emission standards per country? Many people like to compare whether in USA are more strong emission standards than in EU.

Thanks, Regards, Psihodelia from Germany —Preceding unsigned comment added by 217.7.198.35 (talk) 13:11, 10 December 2009 (UTC)

"Warning: The below write-up on US regulations sorrowfully contains zero quantitative information, thus you may be wasting your time reading this bureaucratic listing of cryptic abbreviation codes typical to USA. You won't find any MPG, NOx, SOx, CO2 or particle matter emissions numerical data here regarding US vehicles. If you aware of such data, please contribute here! Looks like few yankee cares a damn about the environment..."

This was removed from the beginning of the second section of the article. What is to be done? A call for more contribution perhaps, but this is totally unacceptable for any article. --Mark Lewis 10:37, 11 Jan 2005 (UTC)

US emissions description is totally contentless now.
The US section is total nihil. It is nothing more than a circular self-referencing system of cryptic abbreviations, without absolutely any kind of numerical data to back it up! I guess you do not understand? Well, based on the wikipedia info a US "partial zero emissions vehicle" could either be a bicycle (where the only emission is the cyclist's fart, to be rude) or a modified Hummer H1 SUV having an 1000 bhp Kenworth truck engine. There is no numerical info on the page to let us decide which is the case.

Any person could create a system of circularly self-referencing acronyms and abbreviations for emissions categories out of thin air. Yet, it would still be zero information content. So either delete the US emissions section or add the numerical data (how many grams of CO2, NOx, SOx, unburnt fuel, particle charcoal matter are emitted per distance travelled) to back up those cryptic PZEV and alike codes with verifieable information.

Look at the Euro-X standard descriptions. Each one is just a single sentence and it tells us the truth frankly. Weight and numbers, nothing else matters. Acronyms are PR bullshit and do not belong to an ecyclopaedia.

It is a shame US people do not dare to face the polluting nature of their monster cars and try to hide the sad "20mpg" reality behind cryptic PZEV and similar abbreviations. In Europe 65mpg is reality now.

Regards: Tamas Feher from Hungary "etomcat@freemail.hu"


 * I agree with Tamas. We want numbers and references to ISO standards too. --Mac 06:32, 5 July 2006 (UTC)


 * Though I know little of US emission standards, I do know that they have so much flexibility built into them that it is very hard to summarize, and harder yet to compare with EU standards. That being said, US standards are not clearly worse than European standards. Have a look at the Carlines website or the dieselnet pages if you want to have a go at providing an overview. [[User:Jensbn|Jens Nielsen] 15:46, 5 July 2006 (UTC)

Really noone is interested in emissions in the USA
The "EPA standards in the United States" section still lack any kind of quantitative information and is still nothing more than a list of self-referencing acronyms and letter codes. Someone please provide the numbers for allowed US emission. Number, numbers, numbers, where are the numbers? 195.70.32.136 00:21, 11 December 2005 (UTC)


 * There is now profusion of separate articles, starting with US emission standard. What numbers there are should now be findable in an appropriate article, or its references. -- Beland (talk) 19:48, 20 April 2008 (UTC)

Euro norms: what are the correct Euro 0 values
UPDATE: I think I figured the difference out, it has to do with different test cycles. See my changes and see if you agree.

Dear Emission standard writers,

I edited the page to add another version of Euro 0 norms I have found in the literature. Does anyone know what the correct values are, or if there is a range?

Otherwise, thanks to all, especially for the Asia section. Cheers,

Jujubeberry 12:18, 17 February 2007 (UTC)

Discussion for merger
It's been suggested that EPA Air Pollution Score be merged into this article. Seems like a good idea to me. Comments? Chevinki 06:46, 9 March 2007 (UTC)
 * It's since been merged into US emission standard. -- Beland (talk) 19:51, 20 April 2008 (UTC)

Debatepedia external link?
Is a Debatepedia wiki external link to a debate on the comparative advantages and disadvantages of regulations vs the markets acceptable here? —Preceding unsigned comment added by 75.198.98.193 (talk) 03:40, 12 November 2007 (UTC)

Electric cars and emissions
I have removed a comment regarding electric cars and the fact that petrol cars produce 'up to ten times more' emissions. This comment already had a citation needed tag but as there was no citation and the comment is absurd, I felt it was not justifiable to leave it.

Any given form of energy needs to come from somewhere, and in the U.S. roughly 3/4 of electricity is generated by means that produce the same or more emissions than a petrol engine: coal gas and petroleum powerplants. Of the remaining quarter 3/4 is produced by nuclear power stations. Although nuclear power is mch cleaner in terms of carbon emissions it has other byproducts which are in fact far more dangerous than carbon dioxide. So in reality 1/16 of the electricity produced in the united states comes from clean sources. http://www.eia.doe.gov/cneaf/electricity/epa/epat1p1.html

Perhaps this would suggest that it could be said that a petrol powered car would produce 1/16 more emissions than an electric vehicle and this may even be increased by the fact that electric vehicles are usually lighter and therefore require less energy to move. But this would be ignoring the fact that to make these vehicles lighter they are usually constructed from high tech energy intensive materials such as aluminium. These materials mean that the energy used (and therefore the emissions produced) at the factories and smelters during this cars production is far greater than that of a traditional petrol powered vehicle, and these massive investments of energy can be equal to years of running a vehicle.

I believe it is possible and desirable to make a cheap, efficient electric car and run it off purely emissions free electricity reducing the carbon footprint of private motor vehicles substantially. But it is possible only in theory at this time, and without a massive change to the electricity generation infrastructure of the country it will never become reality. —Preceding unsigned comment added by 60.234.215.254 (talk) 06:02, 14 February 2008 (UTC)

kWh notation
Comment is invited at Wikipedia_talk:Manual_of_Style/Dates_and_numbers on the question of whether kWh (with no space and no dot) is an acceptable unit symbol for use in articles, as opposed to restricting the choices to kW&middot;h or kWh (i.e. with either a space or a dot). EEng (talk) 22:45, 30 July 2014 (UTC)

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