trackwalker

track·walk·er

 (trăk′wô′kər)
n.
A worker employed to inspect a section of railroad track.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

trackwalker

(ˈtrækwɔːkə)
n
(Railways) US another name for a trackman
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The only way to defeat the problem is with trackwalkers who physically walk down a rail line and look to see that nuts and bolts are in place.
In the months following the 9/11 attacks, some transit systems employed trackwalkers to examine rails and roadbeds.