"Dean Hoffman" " wrote in message
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On 6/28/13 9:32 PM, . wrote:
"Dean Hoffman" " wrote in message
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On 6/27/13 9:16 PM, RBM wrote:

I think this stuff is just the only successful technology currently
available that meets the EPA standards for diesels. It doesn't matter
who the manufacturer is, all diesel trucks in the U.S. made after 2010
have the same stuff strapped on to them.

This new crap is even showing up on farm equipment and irrigation
power
units. It might make sense to limit emissions on city buses, but on
farm
equipment?

It MIGHT make sense to limit emissions on city buses?

Depends on the trade offs.

The U.S. government keeps increasing the fuel mileage standards, for
example.

As they should.

Vehicles are being made lighter as a result. How many more people are
killed or injured because of that?

Crash worthiness is independent and not a function of
vehicle mass.

Suppose we had vehicles sturdily built like the ones from the 50s 60s with
modern safety features?

Yes by all means, let's return to the technology of a half
century ago.