THEMA: Infoseiten über Bahnfahrzeuge (Lkw, Pkw, usw)

Hallo zusammen
Ich leite mal eine Frage eines US-Modellbahner weiter und hoff Ihr könnt diese besser
beantworten
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Do you know of a website that has photos of railway (OEBB, DB, etc..) owned LKW's and PKW's???  For example, machines used for engineering or track maintenance. I see many, many sites with photos of track machines, but no trucks?
Perhaps in Europe railways do not rely on trucks so much as the US railways do?
Thank you! Louis