General Electric Tier 4 works east on the old Boston & Maine.

These modern locomotives have been on the move in New England for a few months now, but they managed to elude me. Or my camera anyway. (I saw one in Worcester some weeks ago.).

Pan-Am Railways symbol SEPO typically operates with run-though locomotives. The eastward freight is pictured at Ayer, Massachusetts. Fuji X-T1 digital camera.
Pan-Am Railways symbol SEPO typically operates with run-though locomotives. The eastward freight is pictured at Ayer, Massachusetts. Fuji Film X-T1 digital camera.
CSX logo on a new ET44AH diesel-electric.
CSX logo on a new ET44AH diesel-electric.

The Tier 4 are the most modern high-horsepower freight locomotives offered by General Electric. They are designed to meet EPA’s Tier IV emissions standards.

While similar in appearance to other late model GE freight locomotives, they have a distinctive large capacity radiator and vents at the back. This provides increased heat exchange area in the radiator cab is required to meet the stricter Tier 4 exhaust emission requirement using by using Exhaust Gas Recirculation

On the morning of Tuesday January 26, 2016, Pan Am's SEPO is seen at the Willows, east of Ayer, where the Stony Brook Branch diverges from the Fitchburg Route. The Stony Brook handles Pan Am's though freights to Maine and New Hampshire destinations.
On the morning of Tuesday January 26, 2016, Pan Am’s SEPO is seen at the Willows, east of Ayer, where the Stony Brook Branch diverges from the Fitchburg Route. The Stony Brook handles Pan Am’s though freights to Maine and New Hampshire destinations. This set of three locomotives demonstrates an evolution in modern radiator profiles. The lead locomotive has the most modern Tier 4 design, while the second locomotive is one of GE’s Evolution Series that was in production from 2004-2014, third out is a 1990s era design: the AC4400CW .

On Tuesday, January 26, Bob Arnold, Paul Goewey and I found CSX 3308 working symbol freight SEPO (CSX Selkirk Yard to Portland, Maine) at Ayer, Massachusetts.

I always like to catch new power on the move and we caught this freight at several locations.

GE's modern Tier 4 locomotives can be instantly recognized by their enormous radiator profile.
GE’s modern Tier 4 locomotives can be instantly recognized by their enormous radiator profile. When photographing these modern locomotives, a trailing view such as this one offers a better view of the technologically distinctive features.
This telephoto trailing view emphasizes the radiators. FujiFilm X-T1 digital camera.
This telephoto trailing view emphasizes the radiators. FujiFilm X-T1 digital camera.

What about a classic three-quarter ‘roster view’ you ask? Well, I exposed that on color slide film, of course!

Tracking the Light posts daily!