Trains.com

P.S.R. And Really Long Trains

10390 views
118 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    January 2014
  • 8,221 posts
Posted by Euclid on Wednesday, April 14, 2021 12:16 PM

Euclid

 

Somebody should do a formal study of monster trains to compare the savings in labor they yield versus the added cost of damage, delays, and wrecks. 

When I say somebody should do a study, I mean some neutral, objective outsider, and certainly not railroad management. 

Although, I am surprised that labor unions have not made such a study.  They have come out against monster trains for a variety of reasons.  Since monster trains are seen by management as saving cost by reducing crew labor per ton of train, it seems like labor would be well served by a study proving that monster trains actually lose money by the wear and tear rather than save money by reducing crew size.  I wonder what the investors would think of that.  

  • Member since
    December 2017
  • From: I've been everywhere, man
  • 4,269 posts
Posted by SD70Dude on Wednesday, April 14, 2021 1:34 PM

tree68
Fred M Cain
Was that a monster train gone bad?  I tried Googling for the cause but was not able to find it.  Maybe I didn't look in the right place.  Anybody know?  

Right across the river from me, but I don't recall it being big news.  Definitely not a "monster train" as it was only around 84 cars.  Slack action is a possibility, but I'd guess a failure of some sort.

Edit - on looking at a few other images, and a news story or two, the two cars at the end of the train were loaded with paper, and there was a small rise and dip about where the cars might have been about the time you can hear the air dump in the video.  

It appears the TSB did not conduct an investigation into this derailment, so there is no publicly available report.

I agree that this train was not particularly long, but it was mainly composed of loaded centrebeams and boxcars and did not have a DP remote locomotive.  These are the worst type of trains for slack action due to their weight and high percentage of extended cushion drawbars. 

It would be unusual for slack action alone to break a knuckle or drawbar so close to the tail end of the train, usually this happens in the middle or fairly close to the head end.

I'll have a look at the Kingston Sub track profile next time I'm at work.

Greetings from Alberta

-an Articulate Malcontent

  • Member since
    May 2003
  • From: US
  • 25,292 posts
Posted by BaltACD on Wednesday, April 14, 2021 1:42 PM

tree68
 
Fred M Cain
Was that a monster train gone bad?  I tried Googling for the cause but was not able to find it.  Maybe I didn't look in the right place.  Anybody know?   

Right across the river from me, but I don't recall it being big news.  Definitely not a "monster train" as it was only around 84 cars.  Slack action is a possibility, but I'd guess a failure of some sort.

Edit - on looking at a few other images, and a news story or two, the two cars at the end of the train were loaded with paper, and there was a small rise and dip about where the cars might have been about the time you can hear the air dump in the video.  

Thought I heard some slack action around the 1:20 +/- mark.  Train looked to be very pedestrian in size.

Never too old to have a happy childhood!

              

  • Member since
    August 2009
  • 322 posts
Posted by BLS53 on Wednesday, April 14, 2021 1:51 PM

What's interesting to me is they run these 2 mile long trains, with a 2 person crew on the front end. Are there any other parameters monitored other than what a trackside detector provides? Seems if something goes wrong, and the conductor walking the length of the train is required, is not only impractical, but dangerous. Danger not from the train itself, but from the surroundings. Like walking an isolated country road when your car breaks down.

Conductors physical conditioning, must be close to military standards to do this job.  

  • Member since
    December 2017
  • From: I've been everywhere, man
  • 4,269 posts
Posted by SD70Dude on Wednesday, April 14, 2021 2:15 PM

BLS53

What's interesting to me is they run these 2 mile long trains, with a 2 person crew on the front end. Are there any other parameters monitored other than what a trackside detector provides? Seems if something goes wrong, and the conductor walking the length of the train is required, is not only impractical, but dangerous. Danger not from the train itself, but from the surroundings. Like walking an isolated country road when your car breaks down.

Conductors physical conditioning, must be close to military standards to do this job.  

Yeah, no.

The only physical tests are picking up a knuckle and carrying it one car length, and riding the side of a car for a few minutes straight. 

When other duties permit, train crews and other employees perform visual inspections of moving trains, on busy main routes these inspections can happen as often as those done by detectors.

The safety of walking the train in remote areas or 'bad neighborhoods' in large urban centres has been raised on multiple occasions.  In my area the danger comes from four-legged wildlife, and as you said walking the trains is not unlike going for a hike by yourself at night in bear country (sounds kind of dumb when I say it like that eh?).  Someone suggested carrying bear spray, and the trainmaster laughed at them (some guys bought their own, despite the company's prohibition on carrying weapons).

While I don't know of any documented attacks on train crews, there have been a number of hair-raising encounters with bears, wolves and cougars out here.  At one point a grizzly was seen killing an elk next to a yard where we commonly walk trains to do air tests, and as is to be expected the bear hung around its food cache for about a week.  Fortunately this particular bear did not seem to view trains and their crews as competition. 

Greetings from Alberta

-an Articulate Malcontent

  • Member since
    May 2003
  • From: US
  • 25,292 posts
Posted by BaltACD on Wednesday, April 14, 2021 8:32 PM

Following video is aimed at the model railroading crowd, that being said, it provides some real information about 1:1 railroading in the 21st Century.

https://www.youtube.com/watch?v=B0n_b5zNMYk

Never too old to have a happy childhood!

              

  • Member since
    September 2002
  • From: Sterling Heights, Michigan
  • 1,691 posts
Posted by SD60MAC9500 on Wednesday, April 14, 2021 9:23 PM

SD70Dude

 

 
BLS53

What's interesting to me is they run these 2 mile long trains, with a 2 person crew on the front end. Are there any other parameters monitored other than what a trackside detector provides? Seems if something goes wrong, and the conductor walking the length of the train is required, is not only impractical, but dangerous. Danger not from the train itself, but from the surroundings. Like walking an isolated country road when your car breaks down.

Conductors physical conditioning, must be close to military standards to do this job.  

 

 

Yeah, no.

The only physical tests are picking up a knuckle and carrying it one car length, and riding the side of a car for a few minutes straight. 

When other duties permit, train crews and other employees perform visual inspections of moving trains, on busy main routes these inspections can happen as often as those done by detectors.

The safety of walking the train in remote areas or 'bad neighborhoods' in large urban centres has been raised on multiple occasions.  In my area the danger comes from four-legged wildlife, and as you said walking the trains is not unlike going for a hike by yourself at night in bear country (sounds kind of dumb when I say it like that eh?).  Someone suggested carrying bear spray, and the trainmaster laughed at them (some guys bought their own, despite the company's prohibition on carrying weapons).

While I don't know of any documented attacks on train crews, there have been a number of hair-raising encounters with bears, wolves and cougars out here.  At one point a grizzly was seen killing an elk next to a yard where we commonly walk trains to do air tests, and as is to be expected the bear hung around its food cache for about a week.  Fortunately this particular bear did not seem to view trains and their crews as competition. 

 

Considering how dangerous some areas can be human or wildlife.. Firearms are a necessity. 

Rahhhhhhhhh!!!!
  • Member since
    December 2001
  • From: Northern New York
  • 25,020 posts
Posted by tree68 on Wednesday, April 14, 2021 9:53 PM

SD60MAC9500
Considering how dangerous some areas can be human or wildlife.. Firearms are a necessity. 

We've had deer and bear on our platform (in the Adirondacks). The deer get the passengers attention, but pose no threat.  The bears don't usually come around if there's people in the area.  One of our trainmen had a bear walking down the platform as he was walking inside the cars.  Spooked him a bit (the trainman).

LarryWhistling
Resident Microferroequinologist (at least at my house) 
Everyone goes home; Safety begins with you
My Opinion. Standard Disclaimers Apply. No Expiration Date
Come ride the rails with me!
There's one thing about humility - the moment you think you've got it, you've lost it...

  • Member since
    December 2007
  • From: Georgia USA SW of Atlanta
  • 11,919 posts
Posted by blue streak 1 on Wednesday, April 14, 2021 11:39 PM

An assumption.  Derailments are happening at about every so many car miles.  If so then average longer trains would mean more derailments per train mile.

My big  worry is that some monster train will derail most of its cars and spread death and destruction over a wide area while carrying various flamables, Haz Mat, including TIH and other items to burn.  There are too many locations that will not be able to muster enough first responders quickly to contain a major derailment.

  • Member since
    December 2001
  • From: Northern New York
  • 25,020 posts
Posted by tree68 on Thursday, April 15, 2021 12:10 AM

blue streak 1
There are too many locations that will not be able to muster enough first responders quickly to contain a major derailment.

That would be most of the country.  

Our local hazmat team would very nearly be overwhelmed with just a few cars involving an actual spill.  Nowadays, volunteer departments in many parts of the country have trouble mustering a full response.  Mutual aid is the word of the day.

On the other hand, even a land barge probably wouldn't derail the entire train - eventually the brakes will slow/stop the rear of the train before it became part of the pile-up.  Even some of the larger derailments of late have been limited to 20 or so cars.  Still enough to cause major mayhem, but not the 200+ cars in those monster trains.

LarryWhistling
Resident Microferroequinologist (at least at my house) 
Everyone goes home; Safety begins with you
My Opinion. Standard Disclaimers Apply. No Expiration Date
Come ride the rails with me!
There's one thing about humility - the moment you think you've got it, you've lost it...

  • Member since
    December 2007
  • From: Georgia USA SW of Atlanta
  • 11,919 posts
Posted by blue streak 1 on Thursday, April 15, 2021 12:18 AM

Tree I agree with you on most times not too many cars will derail.  However what about a downhill runaway ?  Did CP derail most of that grain train ?

  • Member since
    July 2014
  • 565 posts
Posted by Fred M Cain on Thursday, April 15, 2021 7:34 AM

I don't know if either of the two trains involved in this video were true "monster" trains or not.  Nevertheless, this constituted a true nighmare in every sense of the word.  Probably most of you have seen this anyways but just in case you want to see it again......

BNSF Railway Train Derailment and Subsequent Train Collision - YouTube

The head end crew on the oil drag received a radio message from the grain train but evidently they were not able to stop in time.  The derailed covered hopper was pretty far back so I would've thought they could've stopped but I guess not.

  • Member since
    December 2001
  • From: Northern New York
  • 25,020 posts
Posted by tree68 on Thursday, April 15, 2021 7:46 AM

blue streak 1

Tree I agree with you on most times not too many cars will derail.  However what about a downhill runaway ?  Did CP derail most of that grain train ?

Lac Megantic, for that matter.  I would opine that those are outliers.  Certainly not insignificant, but in a different "class" from such things as wheel failures, track issues, etc.

One of the "features" of a runaway is excessive speed, and thus momentum.  Generally speaking, I think that the brake issues that accompany runaways (no/ineffective brakes) generally do not apply on a "flatland" derailment, where the breaking apart of the train causes the perfectly (?) functional brakes to apply in emergency.

Just my observation.

LarryWhistling
Resident Microferroequinologist (at least at my house) 
Everyone goes home; Safety begins with you
My Opinion. Standard Disclaimers Apply. No Expiration Date
Come ride the rails with me!
There's one thing about humility - the moment you think you've got it, you've lost it...

  • Member since
    May 2003
  • From: US
  • 25,292 posts
Posted by BaltACD on Thursday, April 15, 2021 7:51 AM

Fred M Cain
I don't know if either of the two trains involved in this video were true "monster" trains or not.  Nevertheless, this constituted a true nighmare in every sense of the word.  Probably most of you have seen this anyways but just in case you want to see it again......

BNSF Railway Train Derailment and Subsequent Train Collision - YouTube

The head end crew on the oil drag received a radio message from the grain train but evidently they were not able to stop in time.  The derailed covered hopper was pretty far back so I would've thought they could've stopped but I guess not.

Believe both trains were of the 'normal' size of about 100 cars and somewhere between 10K & 15K tons.

Start doing 'your sums' and calculate the kinetic energy that is function of each train at their speeds when the 'real' situation becomes known to each of the operators and you have your answers - as to have been 'safe' ALL that energy from BOTH TRAINS had to have been disippated to ZERO.

Never too old to have a happy childhood!

              

  • Member since
    May 2019
  • 1,768 posts
Posted by MMLDelete on Thursday, April 15, 2021 4:23 PM

In the video, it does not appear that the oil train even slowed down, much less tried to stop. Was the oil train's crew disciplined or fired?

I had not seen that before. Quite dramatic.

 

  • Member since
    December 2001
  • From: Northern New York
  • 25,020 posts
Posted by tree68 on Thursday, April 15, 2021 4:46 PM

Lithonia Operator
In the video, it does not appear that the oil train even slowed down, much less tried to stop. Was the oil train's crew disciplined or fired?

The accompanying text shows that they did make an emergency application, as soon as they were aware of the situation.  It's notable that the grain train, doing 36 MPH, took nearly a minute to get to zero MPH after the derailment.  

As Balt noted, there's a lot of mass to get stopped.

For another example, find the tornado video, where the train was clearly broken apart, yet the following portion ran into the locomotive with the camera.

LarryWhistling
Resident Microferroequinologist (at least at my house) 
Everyone goes home; Safety begins with you
My Opinion. Standard Disclaimers Apply. No Expiration Date
Come ride the rails with me!
There's one thing about humility - the moment you think you've got it, you've lost it...

  • Member since
    May 2019
  • 1,768 posts
Posted by MMLDelete on Thursday, April 15, 2021 5:25 PM

tree68

 

 
Lithonia Operator
In the video, it does not appear that the oil train even slowed down, much less tried to stop. Was the oil train's crew disciplined or fired?

 

The accompanying text shows that they did make an emergency application, as soon as they were aware of the situation.  It's notable that the grain train, doing 36 MPH, took nearly a minute to get to zero MPH after the derailment.  

As Balt noted, there's a lot of mass to get stopped.

For another example, find the tornado video, where the train was clearly broken apart, yet the following portion ran into the locomotive with the camera.

 

The grain train warned it when the oil train's power went by. But it slowed only 1 MPH before it hit that hopper.

  • Member since
    May 2003
  • From: US
  • 25,292 posts
Posted by BaltACD on Thursday, April 15, 2021 5:32 PM

tree68
 
Lithonia Operator
In the video, it does not appear that the oil train even slowed down, much less tried to stop. Was the oil train's crew disciplined or fired? 

The accompanying text shows that they did make an emergency application, as soon as they were aware of the situation.  It's notable that the grain train, doing 36 MPH, took nearly a minute to get to zero MPH after the derailment.  

As Balt noted, there's a lot of mass to get stopped.

For another example, find the tornado video, where the train was clearly broken apart, yet the following portion ran into the locomotive with the camera.

Note that the Grain Train's braking was assisted by the increased resistance to movement by the derailed car itself, so it stopped somewhat quicker than it would have with just brakes alone.

Never too old to have a happy childhood!

              

  • Member since
    January 2014
  • 8,221 posts
Posted by Euclid on Thursday, April 15, 2021 7:14 PM

In the first post here, Fred Cain said:  “It seems like trains have been getting longer.  I was wondering, has this led to an increase in derailments?”

In response here, it has been said that monster trains are more likely to derail because of lack of track maintenance, equipment maintenance, and locomotive maintenance; rather than derailing because of being extra-long trains. 

Why would monster trains derail more frequently than traditional size trains because of a lack of track maintenance, equipment maintenance, and locomotive maintenance?

In other words, what does the track care whether you run one monster train over it or four smaller trains equaling the tonnage and length of the monster train? 

  • Member since
    January 2002
  • From: Canterlot
  • 9,575 posts
Posted by zugmann on Thursday, April 15, 2021 7:17 PM

Euclid
and locomotive maintenance?

If you've ever run a train with a locomotive that had issues like suddenly dropping its load, or a bad pressure maintinaing valve, then yeah, it's not great for smooth operations. 

It's been fun.  But it isn't much fun anymore.   Signing off for now. 


  

The opinions expressed here represent my own and not those of my employer, any other railroad, company, or person.t fun any

  • Member since
    May 2003
  • From: US
  • 25,292 posts
Posted by BaltACD on Thursday, April 15, 2021 9:38 PM

Euclid
In the first post here, Fred Cain said:  “It seems like trains have been getting longer.  I was wondering, has this led to an increase in derailments?”

In response here, it has been said that monster trains are more likely to derail because of lack of track maintenance, equipment maintenance, and locomotive maintenance; rather than derailing because of being extra-long trains. 

Why would monster trains derail more frequently than traditional size trains because of a lack of track maintenance, equipment maintenance, and locomotive maintenance?

In other words, what does the track care whether you run one monster train over it or four smaller trains equaling the tonnage and length of the monster train? 

Are YOU (as the track) more likely to physically 'give out' pressing a 100 pound weight 3 times or 300 times or 600 times - spread out over time or in rapid succession...

Never too old to have a happy childhood!

              

  • Member since
    May 2019
  • 1,768 posts
Posted by MMLDelete on Thursday, April 15, 2021 11:14 PM

Re the video. Isn't there a rule that in double-track territory if a train on one track goes into emergency then any train passing the dynamited train must slow down to 15 mph or thereabouts?

  • Member since
    May 2003
  • From: US
  • 25,292 posts
Posted by BaltACD on Thursday, April 15, 2021 11:30 PM

Lithonia Operator
Re the video. Isn't there a rule that in double-track territory if a train on one track goes into emergency then any train passing the dynamited train must slow down to 15 mph or thereabouts?

Like anything else - it requires communication and time for the actions to become effective.

In the incident we are discussing - there wasn't time for either train to create the communication and have their reactions be effective enough to prevent what actually happened.

Never too old to have a happy childhood!

              

  • Member since
    March 2003
  • From: Central Iowa
  • 6,901 posts
Posted by jeffhergert on Friday, April 16, 2021 6:02 AM

Euclid

In the first post here, Fred Cain said:  “It seems like trains have been getting longer.  I was wondering, has this led to an increase in derailments?”

In response here, it has been said that monster trains are more likely to derail because of lack of track maintenance, equipment maintenance, and locomotive maintenance; rather than derailing because of being extra-long trains. 

Why would monster trains derail more frequently than traditional size trains because of a lack of track maintenance, equipment maintenance, and locomotive maintenance?

In other words, what does the track care whether you run one monster train over it or four smaller trains equaling the tonnage and length of the monster train? 

 

I don't know that the oversized trains derail more.  (Although the larger the train, the more likely to have problems.)  It was asked originally if larger trains have led to more derailments.  Some of us have said it's more about the level of maintenance of equipment, etc rather than just the length of trains.  Shorter trains derail, too.  

I will say that longer trains can subject equipment to more stress.  For example. a car that's been in a long train experiences some harsh slack action.  That harsh slack action damages the draft gear.  Not enough to fail then, but enough that it is on the way to fail at some point.  It winds up in a shorter train, after being banged around a yard.  It's in a shorter train when the pin holding the drawbar in finally fails, allowing the drawbar to pull out.  It lands just right on the track to derail the car or the one behind it (depending which end the drawbar is on) and maybe some more cars, too.

Just tonight, a train we had just met went into emergency about 5 miles behind us.  They ended up having a right end drawbar come out.  Looking at the summary for this train, the previous crew had gotten a knuckle while experiencing problems with one of their DP consists.  The train was 14000ft with a mid-train and rear end DP.     

Maybe the drawbar was a result from the earlier knuckle.

Jeff

  

  • Member since
    January 2014
  • 8,221 posts
Posted by Euclid on Friday, April 16, 2021 6:56 AM

Lithonia Operator

Re the video. Isn't there a rule that in double-track territory if a train on one track goes into emergency then any train passing the dynamited train must slow down to 15 mph or thereabouts?

 

We had a thread on this maybe 3-4 years ago in which these issues were discussed.  When a train goes into emergency on a multiple track mainline, the crew must immediately take action to flag or warn any other trains approaching the area that the train has gone into emergency.  The purpose is that when a train goes into emergency, it may be due to a derailment, and that derailment may be fouling an adjacent track.  So there is a larger than normal probability that a second approaching train will collide with part of the first train than has gone into emergency. 
 
So there is no time to go out and inspect the train that has gone into emergency and check for a derailment, and find that a derailment is fouling the adjacent track prior to warning other trains.  The warning must be made the instant a train goes into emergency, as a precaution. 
 
As I recall, in the earlier discussion, the video indicated that the first train crew waited some time before announcing the warning that they had gone into emergency.  So there was a question of whether that delayed warning played a role in the collision.
 
I recall watching that video many times during that earlier thread, and in watching it now, the current video seems considerably different than the first one.  I will have to watch it again, but it now seems like the time stamp, the voice captioning, and video sequences have all been rearranged by editing.  
  • Member since
    December 2001
  • From: Northern New York
  • 25,020 posts
Posted by tree68 on Friday, April 16, 2021 7:10 AM

jeffhergert
Maybe the drawbar was a result from the earlier knuckle.

Leading one to wonder, in these days of COVID tracing, just how often such detective work is done.  

As you mention, who knows what stresses have been placed on a given part, and when.  The car may have been sitting in a SIT yard for weeks, etc.  Even with computer tracing, it may be hard to make the connection between the initiating event(s) and the final failure.

Interesting consideration.

LarryWhistling
Resident Microferroequinologist (at least at my house) 
Everyone goes home; Safety begins with you
My Opinion. Standard Disclaimers Apply. No Expiration Date
Come ride the rails with me!
There's one thing about humility - the moment you think you've got it, you've lost it...

  • Member since
    July 2014
  • 565 posts
Posted by Fred M Cain on Friday, April 16, 2021 7:23 AM

O.K.  Many great comments and insights!  I would like to modify this discussion just a bit here.

How many, perhaps all of you, have seen this video of a most horrifying derailment caught by chance on someone's home security camera?:

https://www.youtube.com/watch?v=UDADA-w2jZI&list=PLmjlFXMZ9mhGMpjckQ3A86iVkA-5bBUo1 I don't believe that this was a so-called "monster train" but nevertheless, this looks pretty damn scary!

I tried to Google this to find more info on it and was astonished to find out that the lead truck on the second unit derailed and dragged on the ground for an astonishing SIX MILES !  You can see the sparks from it caught on the home security camera.

My question is, how far apart are dragging equipment detectors on mainline railroads in the U.S. and Canada?  I cannot fathom why in the world the crew didn't catch this sooner and stop but they didn't.  Not sure why perhaps they couldn't.  It would seem to me that all they woulda needed to do is to look back once.

Another question, instead of being forced to spend billions installing PTC, would it have perhaps been a better investment to install dragging equipment detectors every mile apart?  An interesting thought, there.

  • Member since
    September 2003
  • 21,669 posts
Posted by Overmod on Friday, April 16, 2021 7:57 AM

Fred M Cain
Another question, instead of being forced to spend billions installing PTC, would it have perhaps been a better investment to install dragging equipment detectors every mile apart?  An interesting thought, there.

That would pose inteeesting capital and maintenance questions, and would require careful AI monitoring to track all the detected 'signatures' in the trains to pick up 'developing' problems with heat or vibration.  And it still will not catch problems that develop between more closely spaced detectors...

The kind of dragging-equipment detector I'm familiar with is the type used on PRR, which is like a set of flat rubber loops bolted to a layshaft rigged in a tie crib.  Anything that bangs the loops over in either direction torques the shaft, which actuates a switch.  One problem is that trespassers may get the urge to kick the device, so to work right it would have to be interlocked with other devices that confirm presence of a train.  Large numbers of these will rapidly hit 'diminishing returns' for the money needed to rig, monitor, and maintain them.

 

  • Member since
    July 2014
  • 565 posts
Posted by Fred M Cain on Friday, April 16, 2021 8:44 AM
I distinctly recall seeing "dragging equipment detectors" in my SPTCo employees timetables from the 1960s & '70s.  My recollection is that they were few and far between.  How far apart?  I can't say right now because I do not have those documents in front of me and would have to dig them out of my attic; that is if I can find them at all.
 
My guess is that they were probably placed in locations where the Company determined that a derailment was either likely to occur or at locations where if one would by chance occur, it would be catastrophic, such as before a tunnel or viaduct or something.
 
If detectors were placed at mile intervals, that could’ve very well prevented the Wellington wreck.  I’m sure that was horrendously expensive.  Not sure how the crew made out but I’m assuming that they were not seriously hurt.   At least one would hope.
 
If detectors were placed at mile intervals, yeah, it’d be expensive.  But would it have cost more than the PTC installations?  The issue of PTC is that it’s focused on preventing collisions.  But the lion’s share of train wrecks are caused by factors other than collisions.  Usually a track or equipment defect as we’ve seen in both the Casselton wreck and the Wellington wreck.  On the Casselton wreck, I’m not sure how long that hopper dragged on the ground.  If it was a short distance, a detector every mile wouldn’t have helped anyways.
  • Member since
    December 2001
  • From: Northern New York
  • 25,020 posts
Posted by tree68 on Friday, April 16, 2021 9:27 AM

Fred M Cain
If detectors were placed at mile intervals, yeah, it’d be expensive.

I would opine that such an action would be governed by cost/benefit analysis (remember - they have to be maintained as well) and that the "Pinto principle" would probably apply, as the cost would likely far outweigh the benefit.

As it is, defect detectors are now spaced about 20 miles apart.  These generally started out as just hot box detectors, and now often include dragging equipment detectors, wheel impact detectors, high/wide/shifted load detectors, and who knows what else.  Some may even include RFID readers, which could identify the offending car.

 

LarryWhistling
Resident Microferroequinologist (at least at my house) 
Everyone goes home; Safety begins with you
My Opinion. Standard Disclaimers Apply. No Expiration Date
Come ride the rails with me!
There's one thing about humility - the moment you think you've got it, you've lost it...

Join our Community!

Our community is FREE to join. To participate you must either login or register for an account.

Search the Community

Newsletter Sign-Up

By signing up you may also receive occasional reader surveys and special offers from Trains magazine.Please view our privacy policy