Diesel locomotives at NYP

[PerRock]

I wonder what kind of job the ventilation fans do clearing smoke from the East and North River tunnels? Say compared to the ones used in places like the Moffat or Cascade Tunnel, that are designed to clear engine smoke....

Slightly off topic, but I ride the subway to work in the early morning hours, where there are several 'work trains' utilizing diesel locomotives...while you can smell some of the exhaust, it is remarkable on how little they do emit....they must be designed to run 'extra clean'.....

There are some locomotives out there that are designed, or retrofitted to emit less smell & look to their exhaust. I know very little about this; but I do know that the diesel locomotives used as rescue engines on the EuroTunnel have "scrubbers" that clean the exhaust. I don't know much more about it however.

peter