Willy
Deshler Ohio-crossroads of the B&O Matt eats your fries.YUM! Clinton st viaduct undefeated against too tall trucks!!!(voted to be called the "Clinton St. can opener").
QUOTE: Originally posted by JoeKoh Nora Your questions are fine.Keep asking them. It is normal for a signal to change to red once a train has entered the "block" (area controlled by the signal)as for interlocking its where two sections of track cross each other.if a train coming from toledo on csx wants to come west to chicago they have to line the switches in Deshler ohio.The railroad guys have to go into a building called a tower"hence interlocking tower" and line the switches.then the train can come down into the wye(switch) and go from the north south track to the east west track and head for chicago.it happens a lot with coal trains for detroit edison. hope this helps Joe
QUOTE: Originally posted by wabash1 Nora and Joe The signs you are seeing is for the type of signal. the "D" is for a distant approach it will never change even with a train going past it the signal will always be yellow. the other signal ( and this is a guess as i dont know the territory) but according to my time table it should be a sign stating it is a automatic "A" ( never seen one at ours) or "C" controlled interlocking. The meaning for the distant approach is that you are approaching a positive signal and that at anytime this signal can be dropped so be prepared to stop . Now i KNow there are some that will say the rule says that before a signal can be taken away from the train the control station must cantact the crew to make sure they can stop before this signal. In anycase where you have a distant approach or a repeater signal if your speed goes below 25mph this does not apply if you drop below 25mph the train must appraoch next signal prepared to stop.
Quentin
Dave H. Painted side goes up. My website : wnbranch.com
QUOTE: Originally posted by Mark W. Hemphill Signaling is full of exceptions, but in very broad terms ... Semaphores indicate stop in the horizontal aspect, proceed at reduced speed (per specific railroad rule) in the diagonal aspect, and proceed at maximum authorized track speed in the vertial aspect. This works the same whether the semaphore is upper- or lower-quadrant. Many semaphores do not have the diagonal aspect; to get a third aspect two blades are needed in combination (SP and UP Harriman standard). Position lights replicate the semaphore arm's three aspects with three plain lights. The PRR and N&W were the major users of position lights; one of the best place to still see them is just east of Chicago along the Skyway. Color position lights replicate the semaphore arm's aspects with three lights, and use the common colors as well -- red indicates stop, yellow reduced speed, green proceed. The B&O was the major user of the CPL; it installed them on the Alton when it owned it. Later this was the GM&O, then CM&W, then SPCSL, and now UP. Cab signals are in broad use. UP has them on the former C&NW main line in lieu of wayside signals, and on its own main line between Omaha and Ogden to supplement wayside signals. Torpedos to my knowledge are no longer in use. Yes, they're loud enough to hear in the engine. They're powerful enough to remove a hand from someone.
QUOTE: Originally posted by Nora This question is about some signs I've seen beside the NS tracks where we take our walk. Each sign had a big black "A" on it, some of these signs were yellow, and some were white. They were down at track level, near a set of signals (within 30 or 50 feet), maybe a mile or so outside a yard. There are four tracks there and I think there was a sign for each one. The odd thing is that workers would come out and cover the signs with black plastic for a few days or a week, then they would come out and uncover the signs, then a few days later they'd be covered again, and this went on for maybe a couple months. At some point the signs disappeared and are now gone. Does anyone have any idea what these signs meant and why they were playing hide-and-seek? Another thing I noticed is that each of the 4 signals there have small signs with the letter C on them right next to the signals. I also looked at the signals near our house (same line, about 8 or 10 miles away) and one of the two signals there has the same "C" sign. I think the other one has a sign that says "D" but I can't get near enough at the right angle to see for sure. What are these? --Nora
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