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| Re: And the (7) line gets a little slower....(and louder) (596113) | |||
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Re: And the (7) line gets a little slower....(and louder) |
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Posted by trainsarefun on Sun Apr 6 11:09:25 2008, in response to Re: And the (7) line gets a little slower....(and louder), posted by RonInBayside on Sun Apr 6 10:20:50 2008. Marginally.Granting you, arguendo, that it's marginal, that's x seconds added on to each move. It has a cumulative effect. If you doubt this, then you can visit the actual terminals where timed signals enforce low speeds, look at your watch with a second hand, look at the trains, and multiply. You didn't consider average dwell time at the station, the reason for the dwell time I've taken it that these factors shouldn't affect the terminal capacity. So my estimate based off that will look better than what happens in the real case where a train dwells longer than it should. Bear in mind that this is a terminal, so you have the delay in opening the doors, crew change and passenger exchange, conductor setup, engineer recharges the brakes and does her checks, close up the doors, get indication, get lineup, proceed. Remember also on the proceeding out, there is a brake test, so the speed out would be a bit slower than the speed in. nor where exactly the timer is If the speed limit imposed is now 15 mph, that's the speed limit, isn't it? Timed signals or not. nor how much slack the schedule had to begin with Running 30 tph, you figure out how much slack there is in the schedule bearing in mind the list of to-dos that I mentioned. That's called foaming - focusing on one detail obsessively to the exclusion of all others. Genius, I cut you slack by not counting the other factors, all of which would tend to delay service compared to the case where all that's involved is just going in and going out of the terminal. If you don't want the favor, OK, your job is made that much harder. More foaming on your part. No foaming. Just math. |
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