Road railer.

[Charlie B]

Another interesting Shorpy find. <!-- m --><a class="postlink" href="http://www.shorpy.com/node/17521?size=_original#caption">http://www.shorpy.com/node/17521?size=_original#caption</a><!-- m -->
Charlie

[lajry]

Looks more like a "bus" railer rather than a road railer (trailer) on RR wheels.