[DMCForum] Re: Traffic.

["therealdmcvegas" <dmcvegas@xxxxxxx>]

Traffic jams do produce more emissions than free flowing traffic. 
Take a look at you smog checks on any vehicle put thru the 2-speed 
test. Fast idle always shows reduced emissions.

Catalyized cars do NOT produce lower tailpipe emissions. The simply 
shift the gas ratios around. A catalytic convertor doesn't filter 
100% of all gas, as a certain amount of carbon-monoxide, and hydro-
carbons still escape. Their levels are certainly reduced, but not 
erradicated. And still you have Nitrous-Oxide to contend with, and 
water.

Now water itself isn't a bad thing of course. But what is bad are the 
unnatural levels of Hydrogen gas the catalysed cars produce. Hydrogen 
by itself isn't a bad thing. However, in great enough quantities, it 
can have negative effects on both global warming, and ozone depletion.

http://www.mindfully.org/Energy/2003/Hydrogen-Harm-Ozone12jun03.htm
http://succ.shirazu.ac.ir/~motor/engin/catc.htm

So while catalytic convertors are good at helping emissions, they are 
not the best solution. Only diesel is.

-Robert



--- In DMCForum@xxxxxxxxxxxxxxx, Martin Gutkowski <martin@xxxx> wrote:
> I think he means that traffic jams, produce more pollution than 
free 
> flowing traffic. So he, who never gets stuck in traffic, produces 
less 
> than a clean modern car in traffic.
> 
> Personally I think this is rubbish. A cat equipped vehicle produces 
not 
> a lot more than carbon dioxide and water. A de catted car produces 
a 
> whole load of other shit
> 
> Martin
> 
> Marc Levy wrote:
> 
> > No argument there.. Traffic does suck, and many
> > decisions are made based on traffic..  Especially
> > living near the Jersey shore, all "locals" know what
> > roads to avoid in the summer.

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