[daepp]

Emissions and pilot-less locomotives:

I pass a major switching yard and a facility that unloads domestic autos (from Detroit I guess) aimed for the west coast market. All streets, along with the tracks I'm able to see, are covered in warning signs that the locomotives may not be piloted. I suspect that they ARE piloted, but from a remote location. And these are HUGE locomotives.

And re emissions, the locomotives around So Cal no longer "look" like the soot emitting engines of old. And I believe they cannot idle forever like they used to.