Locomotive Auxiliary Lighting

[Super_G]

How many different types of lights are on a modern (i.e. 90's to present) diesel locomotive? There are the obvious headlights, ditch lights, class lights (not necessarily used in my time-frame), marker lights (I'm looking at you Conrail...), number board lights, and step lights. I know that there are more, I just don't know what they are, what their purpose is, and where specifically on the locomotive they go.

[Ed Kapuscinski]

Ground lights. They shine down on the ground next to the cab so the crew can see if the engine is moving.

[Super_G]

Would there be anything on the long hood towards the radiator section? I might have seen one there at night. Also, are there lights on the front and rear porches of the locomotive?

[Ed Kapuscinski]

So there are a few more and it depends on the railroad.

For example, Southern put step lights pointing down on the walkways.

Additionally there are lights at the porches. On GEs they're circles, on EMDs they're little slots.

https://images.app.goo.gl/XyLSbwZQmzoq2Zbr6

[Point353]

http://tdgdesign.com/locomotive-lighting/locomotive-exterior-lighting/

Is this one a recent development?
http://tdgdesign.com/product/led-ladder-access-lighting/