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[quote user="edblysard"] [quote user="schlimm"]More to the bigger point, it is not very reassuring that the folks with lots of real experience don't have more consensus. <div style="clear:both;">[/quote]</div> But we do have a consensus, and our answer seems to not satisfy the questioner. The same answer has been given over and over…”Enough to hold the train in place” This answer is part of the GCOR, Norac and Canac rule books and every railroads own safety rules and operating rule book. The technique to test how many are required has also been given over and over….apply hand brakes, (if a specific number of brakes is given by that particular carrier, start with that number) remove air brakes and locomotive brakes and see if it the train moves…if so, apply more and repeat test till the train remains in place held only by the hand brakes on the cars.[/quote] I agree that there is a consensus here on the matter of how to set the correct number of handbrakes. Actually, I have no problem understanding what the consensus is saying, and I was not refusing to accept it.   My point in demanding a “number” was to separate the so-called “guidelines” from the “as many brakes as it takes” answer, in order to illustrate that the guidelines are not capable of generating the required number.  Once we established that the only way to get the number is by the test, I wanted to ask why the TSB of Canada rejects the test as being unreliable.
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