It is a purely subjective determination, unless the carrier has a specific number of hand brakes that, by rule, must be applied, then the decision as yes or no, secured or not secured, rest totally upon the inspector’s personal opinion.
50 cars sitting in a flat land siding with two hand brakes….if it has been sitting there a day or two and has not moved, it is secure, but if that carrier has a rule that requires one hand brake for every 5 cars in a train, then it isn’t secure.
Most carriers have, in their own safety rules, a rule that has a minimum number of hand brakes that must be applied to standing cuts of cars or trains left unattended.
And of course, there are the rules in both GCOR and Norac, which basically state that when a cut of cars with engines attached are to be secured, the engineer will do a service reduction on the air brakes system, and a crew member will apply a “sufficient number of hand brakes to prevent movement”…after that, the engineer will release the air brakes, and the train will be observed for a minute, if no movement is observed, the engineer will do a full service reduction to the air brake system, and the locomotive will all have their hand brakes applied.
If movement is observed, the engineer will again do a service reduction, and the crew member will apply additional handbrakes, until such time as movement is controlled.
For a cut of cars without engines attached, the crew members must apply sufficient number of handbrakes to prevent movement, and observe the cut of cars for a sufficient amount of time to determine than no movement will occur.
Now, a lot has been made in previous thread s that this rule is unsatisfactory, in that it does not give a specific number of hand brakes to be applied, which is true, but the intent of the rule is obvious.
It is written this way to ensure