mmi16 wrote:
And the rule as saved countless lives and untold millions of equipment damage from MofW workers and other trains hear trains call signals that indicate that SOMETHING is not RIGHT.
That's dependent on the track gang sitting there listening to the radio...something they may not always have time to do.
Under NORAC we had clear signage letting train crews know they were approaching a work gang. And our bulletins were organized by milepost. There was no mistaking that large "A" board two miles out.
Today, what's used is an all-purpose "firecracker" (yellow with a red slash) that can mean a speed restriction, a stop board, or any other limiting condition. Since there's frequently a slow order on a stretch before crews come out to repair it (and put up a stop board) it's easy to mistake the approach-speed-limit firecracker with the approach-stopboard firecracker.
mmi16 wrote:Railroads are still composed of human beings and human beings make mistakes. Graniteville, SC on the NS is an example of a man failure incident that should never have happened....it did. They enter blocks they don't have authority to, they run signals, they transpose numbers of milepost when requesting authorities, they do any of a thousand different things that can cause a collision between and train and either another train or roadway equipment. A train announcing it's progress, signal by signal and block by block over the road channel gives all those who are not on the train the opportunity to reconcile there proximity to the train.
A work gang isn't going to hear the train until it's four miles away. So they
may hear two signal announcements; or they may only hear one.
And if they're busy, they may hear NONE. They're not out there to listen to the radio. They're running equipment; paying attention to the work.
And with high traffic volume, one transmission won't stand out; not if the radio's exploding with chatter. Frequently we have to call the foreman - a transmission AIMED AT HIM BY NAME - four times or more.
mmi16 wrote:In regard to the False Clear....there are numerous causes for False Clears, other than sabatoge. Some are as simple as a crack in the back of the signal assembly and the sun shining through the crack during a 10 minute segment of the day. Needless to say there are also a hundred different reasons that relate to defects in the signal system or the causes of nature....a dead rat shunt terminal in the signal case to cause a False Clear. Operating 5, 10, 15 or 20 thousand ton trains at speeds up to 79 MPH is serious business and any opportunity that can be taken to prevent a tragedy should be utilized.
Bravo Sierra.
In ten years out here....I have heard ONE credible claim of a false clear. I have heard of a dozen or so times the crew's tried to CLAIM a false clear...frequently it's come from misreading the signal or reading the wrong signal. For example, one claim was that a signal displayed "medium approach" when in fact it displayed "restricting." That particular signal CANNOT DISPLAY "Medium Approach." The problem was that NORAC "Medium Approach" is CSX's "Restricting." And yes, a collision came out of it.
Another case came when a NORAC-trained guy read a CSX "Restricting" as a "Medium Clear." (The Seaboard "lunar white" looks for all the world like a green in some conditions). It happened on the entrance to Willard Yard. The crew on the train ahead was supposedly listening to the radio. So too was the Train Director in Willard...yet nobody said anything and the crew rear-ended at Medium Speed.
I will trust the signal system over the hope that "somebody" will hear an incorrectly-read signal and respond to it, any day of the week.