Union Tpke Posted January 14, 2020 Author Share #151 Posted January 14, 2020 8 minutes ago, R68OnBroadway said: So it measures wheel rotations to mark the distance between stations? I thought it was controlled by a transponder or something like that on the tracks. The only transponders are there with CBTC. Here is an article about this topic: https://www.nytimes.com/2002/12/12/technology/for-subway-riders-a-sense-of-place.html 1 Quote Link to comment Share on other sites More sharing options...
SimplyMyself Posted January 14, 2020 Share #152 Posted January 14, 2020 So 8th Ave CBTC was awarded today, after being delayed for so many months... https://www.nydailynews.com/new-york/ny-subway-signals-cbtc-eighth-ave-line-mta-20200113-vlo2l24bibfypdkridikpetyki-story.html 0 Quote Link to comment Share on other sites More sharing options...
LGA Link N Train Posted January 14, 2020 Share #153 Posted January 14, 2020 9 hours ago, SimplyMyself said: So 8th Ave CBTC was awarded today, after being delayed for so many months... https://www.nydailynews.com/new-york/ny-subway-signals-cbtc-eighth-ave-line-mta-20200113-vlo2l24bibfypdkridikpetyki-story.html The article didn’t say who got the award... 0 Quote Link to comment Share on other sites More sharing options...
Union Tpke Posted January 14, 2020 Author Share #154 Posted January 14, 2020 11 minutes ago, LaGuardia Link N Tra said: The article didn’t say who got the award... L.K. Comstock. See the MTA Press Release 1 Quote Link to comment Share on other sites More sharing options...
Lex Posted January 14, 2020 Share #155 Posted January 14, 2020 4 hours ago, LaGuardia Link N Tra said: The article didn’t say who got the award... That guy has a penchant for leaving out crucial details... 0 Quote Link to comment Share on other sites More sharing options...
Union Tpke Posted January 14, 2020 Author Share #156 Posted January 14, 2020 21 minutes ago, Lex said: That guy has a penchant for leaving out crucial details... You know, you could email him and let him know. 0 Quote Link to comment Share on other sites More sharing options...
Lex Posted January 14, 2020 Share #157 Posted January 14, 2020 3 hours ago, Union Tpke said: You know, you could email him and let him know. Or he could do his damn job and cover all the bases. After all, he's the one getting paid for transit coverage in a newspaper. 0 Quote Link to comment Share on other sites More sharing options...
Union Tpke Posted January 14, 2020 Author Share #158 Posted January 14, 2020 2 hours ago, Lex said: Or he could do his damn job and cover all the bases. After all, he's the one getting paid for transit coverage in a newspaper. He has done a pretty good job so far. 0 Quote Link to comment Share on other sites More sharing options...
Lex Posted January 15, 2020 Share #159 Posted January 15, 2020 43 minutes ago, Union Tpke said: He has done a pretty good job so far. Define a "pretty good job". 0 Quote Link to comment Share on other sites More sharing options...
Union Tpke Posted January 17, 2020 Author Share #160 Posted January 17, 2020 Screen Shot 2020-01-17 at 2.13.28 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.06.49 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.06.53 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.07.02 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.07.28 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.07.36 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.07.43 PM by Union Turnpike, on Flickr Note the budget shortfall Screen Shot 2020-01-17 at 2.07.55 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.08.06 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.08.11 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.08.20 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.08.27 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.08.38 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.08.44 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.08.50 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.08.58 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.09.04 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.09.10 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.09.15 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.09.25 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.09.32 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.09.42 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.09.50 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.09.57 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.10.02 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.10.09 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.10.17 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.10.23 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.10.28 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.10.33 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.10.38 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.10.46 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.11.28 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.11.33 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.11.37 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.11.42 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.11.48 PM by Union Turnpike, on Flickr Screen Shot 2020-01-17 at 2.11.54 PM by Union Turnpike, on Flickr 2 Quote Link to comment Share on other sites More sharing options...
Union Tpke Posted January 17, 2020 Author Share #161 Posted January 17, 2020 Screen Shot 2020-01-17 at 2.20.40 PM by Union Turnpike, on Flickr 0 Quote Link to comment Share on other sites More sharing options...
Ethan777 Posted February 13, 2020 Share #162 Posted February 13, 2020 On 1/14/2020 at 8:18 AM, R68OnBroadway said: So it measures wheel rotations to mark the distance between stations? I thought it was controlled by a transponder or something like that on the tracks. Hello. to clarify about wheel rotation, yes, u can say that in a way, wheel rotation is used to mark the distance between stations. The trains shld be equipped with tachogenerators which are the sensors to track distance travelled by wheel rotation. Typical tachos are basically optical light sensors , partitioned with many fine divisions of slits that rotate w the wheel motion. 2 sensing heads are in each tacho to track the rate of change of the light intensity received by the sensor and output the corresponding square waveform function of light intensity against time is obtained. The phase difference of the waveforms obtained by either sensing head establishes train direction (fwd or reverse); the frequency of the square waveforms can then tell you the period and thus the speed, by taking into account the full arc length 1 wheel rotation is. MTA just needs to pre define the "distance" between any 2 stations such that when a train is otw to the next stop. They will also need define the distance point as your announcement trigger. During operation with all this parameters in place, the PA program will reset the distance to the correct value and progressively step down this distance based on the tacho signals received (a measure of speed - which is the rate of change of distance) THis is the tricky part coming in regarding this way of triggering PA. Becoz your pre-defined distance is fixed, deviating off the original route in which yr distance was defined as will cause abnormal/incorrect triggering of your PA since u are not travelling on the by-right path. Thats how u can get PA programs to mess up if for eg (train goes to local track / vice versa) From a rolling stock perspective, do also note that wheels wear down in diameter overtime due to the natural phenomenen of friction and heat at the wheel-rail interaction point on the tracks everyday. When trains are running on smaller wheel diameter, the wheel is going to rotate at faster angular velocity for that same linear velocity - this is gg mess up your tacho signal as well - false positive that train is travelling faster than normal and thus causing the distance countdown to happen faster than normal - PA trigger early. 2 Quote Link to comment Share on other sites More sharing options...
Union Tpke Posted February 25, 2020 Author Share #163 Posted February 25, 2020 (edited) https://new.mta.info/projects/culver-line-signal-modernization?fbclid=IwAR3DzQ4Ng8jOTIKgu2Y-dfSH2ypVmHPblbAle3U3ihZiCat5qaTyMJCwjk4 https://new.mta.info/projects/culver-line-signal-modernization-details Quote We’ve invested in the Culver Line Signal Modernization project—an initiative which will solve the ongoing delays caused by old signals on the Culver Line from Church Av to W 8th St in Brooklyn by fully replacing them with modern signaling. Starting in March 2020, we will be entering the next phase of the project. During this phase, there won’t be weekend subway service at 12 stations in Brooklyn. Car and pedestrian traffic also will be temporarily limited in some areas. We understand how disruptive service changes can be. Here’s what you need to know about what we’re doing, how to use alternate service options as you commute, and the service improvements we expect when the project is done. Quote We have dedicated buses to connect you when F subway service is disrupted on weekends. We also can help you use alternate subway lines to get to your destination. Car and pedestrian traffic will also be limited in some areas while we’re doing this work. @RR503 Quote Reconfiguring and replacing two old interlockings at Avenue X and Ditmas Av What are they doing at Avenue X? Edited February 25, 2020 by Union Tpke 1 Quote Link to comment Share on other sites More sharing options...
RR503 Posted February 26, 2020 Share #164 Posted February 26, 2020 1 hour ago, Union Tpke said: https://new.mta.info/projects/culver-line-signal-modernization?fbclid=IwAR3DzQ4Ng8jOTIKgu2Y-dfSH2ypVmHPblbAle3U3ihZiCat5qaTyMJCwjk4 https://new.mta.info/projects/culver-line-signal-modernization-details @RR503 What are they doing at Avenue X? This is a good question re: X. I'll ask around. It's quite disappointing to see that this project somehow didn't get piggybacked onto the oh, idk, 2 years of expressing and weekend shutdowns for the stations work. Costs the agency $$$ and riders time unnecessarily. 9 Quote Link to comment Share on other sites More sharing options...
P3F Posted February 26, 2020 Share #165 Posted February 26, 2020 2 hours ago, Union Tpke said: "We have dedicated buses to connect you when F subway service is disrupted on weekends. We also can help you use alternate subway lines to get to your destination. Car and pedestrian traffic will also be limited in some areas while we’re doing this work." This sounds very similar to the intermittent closures that have already been happening during weekend suspensions of the El. 45 minutes ago, RR503 said: This is a good question re: X. I'll ask around. It's quite disappointing to see that this project somehow didn't get piggybacked onto the oh, idk, 2 years of expressing and weekend shutdowns for the stations work. Costs the agency $$$ and riders time unnecessarily. Hopefully the interlocking mods are done in a way that facilitates service improvements, such as extending some 's to 18th Avenue (Ditmas Interlocking) as well as more flexibility for the (Ave X Interlocking). 0 Quote Link to comment Share on other sites More sharing options...
Union Tpke Posted February 26, 2020 Author Share #166 Posted February 26, 2020 7 hours ago, P3F said: This sounds very similar to the intermittent closures that have already been happening during weekend suspensions of the El. Hopefully the interlocking mods are done in a way that facilitates service improvements, such as extending some 's to 18th Avenue (Ditmas Interlocking) as well as more flexibility for the (Ave X Interlocking). That is the plan for 18th. 0 Quote Link to comment Share on other sites More sharing options...
Jova42R Posted February 26, 2020 Share #167 Posted February 26, 2020 If they reconfigure Kings Hwy and Ditmars, then I'd like to see the following: All rush hour s become s All rush hour s run via the to Kings Hwy service is expanded outside of rush hour all s run express to Kings Hwy some s continue express to Av X One rush hour becomes an after Church, and runs to CI All non-rush s terminate at 18 Av Thoughts? @Union Tpke @P3F @RR503 0 Quote Link to comment Share on other sites More sharing options...
paulbyron Posted February 27, 2020 Share #168 Posted February 27, 2020 1 hour ago, Jova42R said: If they reconfigure Kings Hwy and Ditmars, then I'd like to see the following: All rush hour s become s All rush hour s run via the to Kings Hwy service is expanded outside of rush hour all s run express to Kings Hwy some s continue express to Av X One rush hour becomes an after Church, and runs to CI All non-rush s terminate at 18 Av Thoughts? @Union Tpke @P3F @RR503 No way there are enough s to cover running all rush-hour s express, especially without Bergen St lower level. 0 Quote Link to comment Share on other sites More sharing options...
Jova42R Posted February 27, 2020 Share #169 Posted February 27, 2020 4 minutes ago, paulbyron said: No way there are enough s to cover running all rush-hour s express, especially without Bergen St lower level. True, I didn't realize that. So, some s would stay local. 0 Quote Link to comment Share on other sites More sharing options...
Around the Horn Posted February 27, 2020 Share #170 Posted February 27, 2020 Ridership is such that you don't need every to run express. An every 15 minutes, a la fast service on the Metropolitan Line would be sufficient. 0 Quote Link to comment Share on other sites More sharing options...
Union Tpke Posted March 15, 2020 Author Share #171 Posted March 15, 2020 On 2/25/2020 at 8:34 PM, RR503 said: This is a good question re: X. I'll ask around. It's quite disappointing to see that this project somehow didn't get piggybacked onto the oh, idk, 2 years of expressing and weekend shutdowns for the stations work. Costs the agency $$$ and riders time unnecessarily. Have you heard anything since about Avenue X? 0 Quote Link to comment Share on other sites More sharing options...
Union Tpke Posted March 15, 2020 Author Share #172 Posted March 15, 2020 On 2/26/2020 at 11:32 PM, Around the Horn said: Ridership is such that you don't need every to run express. An every 15 minutes, a la fast service on the Metropolitan Line would be sufficient. I am looking forward to a six-month study of how well the has done. 0 Quote Link to comment Share on other sites More sharing options...
bobtehpanda Posted May 30, 2020 Share #173 Posted May 30, 2020 Question: has the MTA ever stated what the maximum frequency of the Flushing or Queens Blvd Line is post-CBTC? Or what their future service plan looks like at all? 0 Quote Link to comment Share on other sites More sharing options...
Collin Posted May 30, 2020 Share #174 Posted May 30, 2020 The QB Express is currently scheduled for 30 tph, 15 each . Everywhere I've seen has said 10% increase, so that brings it up to 32-33 tph. 0 Quote Link to comment Share on other sites More sharing options...
LGA Link N Train Posted May 31, 2020 Share #175 Posted May 31, 2020 On 5/30/2020 at 3:39 PM, Collin said: The QB Express is currently scheduled for 30 tph, 15 each . Everywhere I've seen has said 10% increase, so that brings it up to 32-33 tph. In terms of Speculation, I think that those extra 2-3 TPH will go to the . Mainly because of the Culver Express Service pattern and what not. 0 Quote Link to comment Share on other sites More sharing options...
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