trackwalker

track·walk·er

 (trăk′wô′kər)
n.
A worker employed to inspect a section of railroad track.

trackwalker

(ˈtrækwɔːkə)
n
(Railways) US another name for a trackman
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.