you can also consider deploying the yellow truck from "Plarail Auto Grated Carport Rail Car" set onto the tracks. The subway system in my city (Toronto Transit Commission) actually uses a MAN truck to push the maintaince train across the system. Sadly the truck was a rental and used by the system's contractor.
Edit: after some digging, I found the maintainence truck I was talking about
(1) Ben Ouyang ?? on Twitter: "Hey @TTChelps what is this?! #ttc #transformers #bumblebee https://t.co/nF4iwOkeu7" / Twitter
Edit: after some digging, I found the maintainence truck I was talking about
(1) Ben Ouyang ?? on Twitter: "Hey @TTChelps what is this?! #ttc #transformers #bumblebee https://t.co/nF4iwOkeu7" / Twitter
My Trackmaster/Tomy/Plarail Photo Gallery Page (over 600+ photos and still under construction)
https://www.flickr.com/photos/183311600@N03/
https://www.flickr.com/photos/183311600@N03/