|
|
| Re: TA is obsessed with CBTC, and ''New'' tech for no reason. (579791) | |||
 |
|||
| Home > SubChat | |||
|
[ Read Responses | Post a New Response | Return to the Index ] |
|
||
|
Re: TA is obsessed with CBTC, and ''New'' tech for no reason. |
|
|
Posted by Jeff H. on Mon Mar 3 03:29:34 2008, in response to Re: TA is obsessed with CBTC, and ''New'' tech for no reason., posted by trainsarefun on Sun Mar 2 09:53:00 2008. Train B's engineer is proceeding at restricted speed prepared tostop well within her field of sight. But let's say that she nods and the train continues at or below restricted speed (which let's stipulate that under the rules of this railroad is 10 mph - still more than enough to cause a bad collision). If train B's engineer doesn't receive the 'ringer' downgrade until the block boundary, it seems perhaps too late to prevent a collision with train A There are two types of ASC systems. Most railroads use a 0-code to mean "restricting", which is usually 15 MPH, and prepared to stop WITHIN HALF RANGE OF VISION. Failure of engineers to obey the definition of RESTRICTING is a frequent cause of accident. Again, remember the premise: the engineer is competent and wants to live. When you get a restricting, you are supposed to be of the mindset that bad shit could be just around the corner. The idea of the signal system is to prevent you from missing a signal and then slamming into a stopped train at 100 MPH. Likewise, when you are in the yard, there is often no signal control at all. What stops you from hitting things there? This is ASC, not driverless ATO. Transit systems often use a stricter ASC in which the 0 code is a stop and a different code (often 75) is used for 15 MPH. |
|
|
|