Q Does anyone know the origin of the term “shoo-fly track?”— Gordon Osmundson, Oakland, Calif. A According to the Historical Thesaurus of the Oxford English Dictionary, this is an American expression, first noted in 1903 and denoting a temporary track. The word “shoo” means go away, and presumably to do so “on the fly” is […]
Section: Ask Trains
Auxiliary tender and steam generator cars
These two cars at Steamtown National Historical Site look similar but had different uses. Hank Ickes Q In the yard at Steamtown National Historical Site in Scranton, Pa., are two cars that I couldn’t identify. Do you know what purpose these cars had? — Hank Ickes, Arlington, Va. A One is an auxiliary tender or […]
DPU rear markers
Rear-end locomotives on distributed power trains may run with or without flashing rear end devices. Steve Schmollinger Q I see distributed power on BNSF freights inbound into San Diego, and some have flashing rear end devices attached to the coupler at the end locomotives. What are the circumstances for using a FRED on end-of-train locomotives?— […]
Rule “X”
Q While listening to the scanner during bad weather, I heard the Canadian National Rail Traffic Controller remind train crews that Rule “X” was in effect. What is Rule X and who can issue it? — Patrick Lallensack, Green Bay, Wis. A CN’s Rule X governs train operations during and after severe weather. Chief dispatchers […]
Tennessee Pass
The activity level of this track belies its once important status as part of D&RGW’s Tennessee Pass. Michael Humphreys Q In December 2010, I noticed a little-used rail line running through Eagle, Colo. What can you tell me about it? The mainline rail dated from the 1950s. — Michael Humphreys, Berryville, Va. A The tracks […]
BNSF’s Network Operations Center
Q How does BNSF’s Network Operations Center in Fort Worth, Texas, control BNSF trains when they share tracks with another railroad, such as the route over the Tehachapi Pass? Union Pacific owns the trackage and allows BNSF trackage rights. On average, BNSF sends three trains over the pass to UP’s one. Does the BNSF Operations […]
Difference between a cabless booster, a slug, and a calf
Q What is the difference between a cabless booster, a slug, and a calf?— Ken Williams, Tehachapi, Calif. A A cabless unit and a calf are quite similar. Cabless diesel units are usually considered to be road units from any builder and usually have their own designation. For example, an EMD F7 with a cab […]
History of the Orange Line
Orange Belt Railway President and GM Peter Demens (far right) stand near No. 7, a National Locomotive Works engine, in Pinellas County, Fla. Donald R. Hensley Jr. collection Q I recently heard about a railroad called the Orange Belt that ran through some of central Florida in the late 19th century. Who owned it? Where […]
Cab-forward cab interiors
Q In a Southern Pacific cab-forward steam locomotive, is the engineer on the right side of the cab? If so, does he have to reach back to man the throttle, reverse gear, air brakes, etc.?— Ralph Podas, Columbus, Ohio A Builders of these locomotives redesigned the cabs entirely so that crews would face the correct […]
Draft-gear slack
Q What is the purpose of having draft-gear slack in the era of diesel locomotives? We all know the steam engines needed slack to start the train, and slack is used to “cushion” coupling, but I’ve always wondered why the modern freight cars don’t “lock” the draft gear when the brakeline is charged up eliminating […]
“Honorary steam locomotive”
Q For many years now, fans have been calling Alco PA locomotives “honorary steam locomotives” because of the thick, dense smoke they generate during acceleration. I’ve heard some people mention that TRAINS Editor David P. Morgan wrote an editorial on this citing a statement or caption penned by rail historian Professor George W. Hilton. Can […]
Passenger car with two sinks
Although the quarters were likely close in this passenger rail car’s public bathroom, the extra sink could only have helped. Q While visiting The Durham Museum in Omaha, I saw a passenger car with two sinks in the public bathroom, one large and one small. What was the small sink used for?– Sam Irvin, Summerfield, Fla. […]
