Former New Haven railbus now in service as a Sperry Rail Services diagnostics car heads up the Conrail River Line on a crisp clear day.

A former New Haven Railroad Mack Rail Bus glides down Conrail's River Line while working on its second life as a Sperry Rail Services vehicle testing the track.

Parked next to the former Southern Railway depot at Danville.

Sperry Rail Service detector car 137 takes a break from rail testing along Southern Pacific's Provo Subdivision mainline in the Salt Lake Valley. The car was built by St. Louis Car for the Soo Lin... (more)

SRS 128 is heading eastbound testing the rail out to Montauk.

Having been born after the doodlebug era, these were about as close as we could get to such an animal. They used to be everywhere. They were railroad looking and even had quarters aboard. Were ... (more)

An early autumn fan excursion on the New Haven from Grand Central Station to Danbury yielded this photo of a Sperry Rail Car tied down at the Danbury yard. Those on the excursion were able to tou... (more)

SRS 128 waiting for westbound MU train 2039 from Ronkonkoma bound for Penn Station. The Sperry car will continue testing westbound.

SRS 138 heading back west after testing from Greenport to Ronkonkoma.

Coming off the Old Main Line sub. Doesn't look like this one has many miles yet, either highway or rail!

Sperry Rail Service #135 at Morristown, TN || July 1984

The unmistakable pitch of a single chime air horn and a Caterpillar diesel engine announce the arrival of Sperry Rail Service car 144, testing for defects along Rio Grande's westward main track at... (more)

A Sperry Rail Service defect detector car takes a breather on a snowy March 1977 afternoon in Rio Grande's Roper Yard. SRS 144 features a CAT diesel motor, a full kitchen, and sleeping quarters fo... (more)

Sperry Rail Service car 137 performs rail defect testing along UP's remote Sunnyside Subdivision in eastern Utah. The car was built by St. Louis Car for the Soo Line in 1925. Sperry acquired it an... (more)

Utah Transit Authority has contracted Sperry Rail Service to inspect their new 45 mile commuter rail extension between Salt Lake City and Provo. SRS highrail 816 glides north through the Jordan Na... (more)