Automotive
No rail cars, just loooong logs between bogeys
hard rubber tires, probably no seat cushion for the tractor operator and passengers either
Above, a Shay type locomotive
But the angle on the drive shaft in the above photo, that's a bit unusual
D8 Caterpillar dozers used an arch to get one end of a log off the ground, reducing the drag from the log, and below is something I've never seen before, a trailer arch. I'm surprised, because I grew up in the logging areas of Northern Michigan, and thought I'd seen most everything about logging
http://www.vannattabros.com/
these go back a long way http://www.blackdiamondnow.net/black-diamond-now
