Not sure how any form of PTC would have effected any change in outcome of a crash in which a vehicle is fouling the track. Especially, and in personal experience, if that fouling of track did not include the crossing gate falling on the roof of the vehicle. It happened to me in real life and we were only saved because the signals dropped to stop when the crossing gate fell on our car's roof.
https://twitter.com/NYGovCuomo/status/818668212082671617
http://www.nbcnewyork.com/news/local/Deadly-LIRR-Train-Crash-Car-Tracks-Brentwood-Farmingdale-410179575.html
I presume the big crowd was SUNY students going home for the holiday.
Happy Thanksgiving!
https://news.google.com/news/story?ncl=dor5YAsmQtU6G4MwkdGgWQFcfaRtM&q=lirr&lr=English&hl=en&sa=X&ved=0ahUKEwiewpDL5szPAhWINx4KHQd3BZ8QqgIIKjAA
The plan to repurpose Madison Square Garden seems more like a trainshed than a station, with its wide open ground entrances and "passive" heating and cooling (read, no heating or cooling). I looks like a very uninviting place on a leaden sky winter day. It realy looks nice, but it seems built for looks rather than comfort.
wanswheel http://www.nytimes.com/interactive/2016/09/30/opinion/penn-station-reborn.html?action=click&pgtype=Homepage&clickSource=image&module=opinion-c-col-right-region®ion=opinion-c-col-right-region&WT.nav=opinion-c-col-right-region&_r=0
http://www.nytimes.com/interactive/2016/09/30/opinion/penn-station-reborn.html?action=click&pgtype=Homepage&clickSource=image&module=opinion-c-col-right-region®ion=opinion-c-col-right-region&WT.nav=opinion-c-col-right-region&_r=0
Interesting article by NY Times’ architecture critic envisions using Madison Square Garden’s steel frame to build a high-ceilinged, glass-walled room at Penn Station.
Make no little plans, said Daniel Burnham and I think somebody listened. I hope this comes to pass.
Gov. Cuomo says Farley Post Office building will have both Amtrak and LIRR.
http://www.mta.info/news-lirr-long-island-rail-road-penn-station-moynihan-train-hall/2016/09/27/governor-cuomo-unveils
https://www.flickr.com/photos/governorandrewcuomo/sets/72157673228738012
Thanks for posting!
MidlandMike Hicksville is the busiest station on yhe LIRR? Busier than Jamaca?
Hicksville is the busiest station on yhe LIRR? Busier than Jamaca?
MTA Long Island Rail Road is co-sponsoring the 4th Annual Car Free Day Long Island on Thursday, September 22, the day supporters hope thousands of Long Islanders who usually drive will leave their car at home and take the LIRR to work, school, or to run errands.
Suffolk County will host a Car Free Day LI Summit a the Suffolk County Community College Ammerman Campus in Selden from 11 a.m. until 1 p.m. where speakers will discuss sustainiable transportation options. Later that evening, supporters will welcome commuters and residents on their way home, from 5:30 p.m. to 7:30 p.m., at the Car Free Day LI Celebration at Wyandanch Plaza.
Car Free Day gives us the opportunity to consider the negative impact of single occupancy vehicles. Using cars less by using alternative modes such as the LIRR, carpooling, bicycles, walking and telecommuting helps reduce traffic, conserve energy, reduce harmful emissions, save money, and even improve fitness. This year 3,332 Long Islanders pledged to be car-free or car-lite, saving over 77 thousand miles of driving and 39 tons of CO2 emissions.
Riding the rails is a great way to be car-free or car-lite, and it’s even more convenient with MTA eTix®, the mobile ticketing app that lets you purchase and use Long Island Rail Road and Metro-North Railroad tickets directly on your smartphone or mobile device.
The Long Island Rail Road is committed to improving service reliability, and contributing to a car-less commute, through the development of projects like East Side Access (which will bring the LIRR into Grand Central Terminal), Double Track (adding a second track between Ronkonkoma and Farmingdale), and the LIRR Expansion Project (constructing a third track between Floral Park and Hicksville).
So far this year, over 3,000 Long Island residents and workers have already pledgedto be car-free or car-lite. Others who choose to take the sustainable route, and complete a pledge online, will be eligible to win free raffle prizes including bicycles, gift cards and theater tickets. Already car free? That’s great. And, since you’re doing the right thing, you will also get the same chance to win prizes when you fill out the pledge form. A complete list of raffle prizes can be found at the promotions page on the Car Free Day LI website.
World Car Free Day is actually an international environmental event celebrated on September 22 every year in over 2,000 cities around the world.
I'm retired now but when I worked 200 plus miles of ctc double track our own power supplies and old school cables on telegraph poles. rarely had a outage that wasn't taken care of quickly by local signal maintainers. Then they started installing solid state electronics to run control points with locally provided power, then reduced the maintaince forces to on weekends one man for 100 miles of territory. Solid state ctc systems run fine on the test bench and so long as power is up but when storms roll around it's catch 22. Some are run via satellite ever see the size of the sat dish?
Looks a lot like a dish/direct/tv sat dish and thier users know what happens when the T storms roll around. Gents that design these systems use common sense use real wirefor dispatch systems the 2 or 3 secound delay for voice communication will eventually cost someone thier life.
I worked with a firm that bidded for satellite terminals (called "VSAT" in our industry) at a major American railroad.
I have been studying satellite technology since the 1980s and when Ku- and Ka-band was introduced, the industry learned quickly that they do not work well when it rains. Snow, ice, clouds, fog, and smog have no effect. It must be liquid water and only liquid water. The more sophisticated satellite terminals increase power on the uplink to compensate for the water but nothing can be done about the downlink.
Now, about that downlink. This is what DirecTV, DISH Network, Hughesnet, WildBlue, and Exede people call "rain fade" which completely blocks reception about 3 minutes before, during, and 3 minutes after a storm. I casually asked what their railroad's PTC system will do when the downlink signal is interrupted. The customer stated, bluntly, that signals drop to "stop" immediately. This meant that during a rainstorm, your railroad is very likely to just stop. And in many cases your assets go into emergency braking as the storm passes over. So you watch on your CTC display as trains stop region by region as the storm moves overhead and isolates your PTC systems communicating via fancy modern VSAT terminals.
Oh, yeah, and there's that 3/4 second delay.
Europe discarded VSAT satellite terminals and when land lines aren't practical they use a terrestrial system called GSM-R, which is basically a cell phone connection with fancy peer-to-peer features.
Ku-band was bad, but Ka-band is much, much worse. Unfortunately, Ka-band is what most modern VSAT terminals use today.
RME BaltACD That would be right... plus the latency on the satellite while the downlink is selected and established. Interesting that the speed of light is one of the limiting factors in your quality of service!
BaltACD
That would be right... plus the latency on the satellite while the downlink is selected and established. Interesting that the speed of light is one of the limiting factors in your quality of service!
The delay is a real pain in trying to hold a conversation with delays as it happens each and every time you go to initiate a segment of the conversation with someone in the field - I don't know how it really affects personnel in the field using the Vsat towers - the Train Dispatcher initiates the PTT and 2 to 3 seconds later sees on his communication console that he can now transmit.
With the set up of the radios being PTT. If you are trying to transmit, you can't hear anything the field is trying to say to you until you release the PTT, then your response will get the delay again. PAIN PAIN PAIN
Land lines to/from the radio transmitters don't have the delay.
One thing I might add, is that a number of the more remote PTC installations are using Vsat data transmission. I have my own misgivings how well and reliably this will actually work.
Never too old to have a happy childhood!
BaltACDseems as if the command to transmit has to make a round trip to the satellite and back before the channel is actually readied for transmission.
RME BaltACD This has nothing to do with storm intensity per se, or any wind or electrical effects; it's absorbance of the satellite signal when a large mass of atmospheric water interrupts 'line-of-sight' from the geosynchronous satellite to the dish facing it. Is there critical railroad data that is handled over geosync connections susceptible to this?
This has nothing to do with storm intensity per se, or any wind or electrical effects; it's absorbance of the satellite signal when a large mass of atmospheric water interrupts 'line-of-sight' from the geosynchronous satellite to the dish facing it. Is there critical railroad data that is handled over geosync connections susceptible to this?
My carrier is using satellite radio for train dispatchers at some locations. The service sucks as there is a detectable delay between pressing the PTT pedal and actually being able to transmit - seems as if the command to transmit has to make a round trip to the satellite and back before the channel is actually readied for transmission.
Some locations are using satellite transmitted Code Line for some CTC control points. The delay in this installation is not as obvious as you are not trying to hold a conversation with another human being.
BaltACDadditionally satellite systems are disrupted by severe weather (just ask Dish or Direct TV users what happens when T'storms are in the area).
It's from ten years ago but this is a good book on the subject.
https://www.amazon.com/Gravy-Train-Inside-Look-Island/dp/155395484X
blue streak 1 What causes these weather related delays on LIRR? Last time there noted that there were many locations that signal wires were either pole line and / or pole cable. Is that still the case ?
What causes these weather related delays on LIRR? Last time there noted that there were many locations that signal wires were either pole line and / or pole cable. Is that still the case ?
Can't speak directly to the LIRR, however, in recent years carrier's signal systems have become dependent on 3rd party electrical power and communications systems, additionally satellite systems are disrupted by severe weather (just ask Dish or Direct TV users what happens when T'storms are in the area). Throw in several hundred thousands of volts of Lightning striking electronics installations designed for proper operation on millivolts and you have problems galore to resolve for 'seamless' operations.
Under the best of conditions Nature can be held at bay, in Severe Weather Nature is undefeated over the long haul.
BroadwayLionNotice says "Weather Related Signal Trouble" and it has also closed service to Brooklyn.
That is perhaps the most colossal understatement since Sandy. Some of the most severe weather I've ever seen on local radar -- and I lived in the area until 1992 and kept a house there until almost 1998 -- went through during that time. I'm not surprised it affected LIRR rail operations; in fact, I'm a little surprised there weren't NEC cat failures all over the place...
Bad storm with high winds and lightning on Monday that took down several trees.
Notice says "Weather Related Signal Trouble" and it has also closed service to Brooklyn. Problem seems to be at Jamaica.
Ergo, other NYP services ought to be intact.
LION wonders what has happened.
ROAR
The Route of the Broadway Lion The Largest Subway Layout in North Dakota.
Here there be cats. LIONS with CAMERAS
LIRR had major weather delays Monday evening. Closed Penn station. Now what happens to the Amtrak passenger if they cannot get to their trains. Also NJT train passengers ?
http://www.nydailynews.com/new-york/severe-weather-wreaks-havoc-long-island-rail-road-service-article-1.2725877
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