tag:blogger.com,1999:blog-293100068373105830.post4754787091681738821..comments2024-03-29T03:02:00.140-07:00Comments on The Amateur Planner: How MassDOT stacks the deck: Red-Blue editionArihttp://www.blogger.com/profile/06058285362842737187noreply@blogger.comBlogger14125tag:blogger.com,1999:blog-293100068373105830.post-78748730246583654352020-11-30T23:20:17.503-08:002020-11-30T23:20:17.503-08:00If you are going for finest contents like me, just...If you are going for finest contents like me, just go to see this site daily since it presents quality contents, thanksed medicationhttps://clients1.google.hr/url?q=https://besterectiledysfunctionpills.com/noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-45542979416788532412020-11-30T20:11:33.531-08:002020-11-30T20:11:33.531-08:00Hello just wanted to give you a quick heads up. Th...Hello just wanted to give you a quick heads up. The words in your article seem to be running off the screen in Safari. I'm not sure if this is a formatting issue or something to do with web browser compatibility but I figured I'd post to let you know. The design look great though! Hope you get the issue fixed soon. Kudoserection pills viagra onlinehttps://clients1.google.com.pg/url?q=https://besterectiledysfunctionpills.com/noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-50027469748673099772020-07-30T16:48:55.648-07:002020-07-30T16:48:55.648-07:00Greetings I am so glad I found your blog page, I r...Greetings I am so glad I found your blog page, I really found you by error, while I was researching on Aol for something else, Anyways I am here now and would just like to say many thanks for a marvelous post and a all round enjoyable blog (I also love the theme/design), I don’t have time to read it all at the moment but I have saved it and also added in your RSS feeds, so when I have time I will be back to read much more, Please do keep up the superb job.<br /><b><a href="https://gdecking.com/" rel="nofollow">safety decking systems</a></b><br />kristinahojholthttps://www.blogger.com/profile/03634764279298743078noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-69151130468615455632019-03-07T04:54:13.595-08:002019-03-07T04:54:13.595-08:00Great Blog Thank you so much for sharing this.
Hik...Great Blog Thank you so much for sharing this.<br /><a href="http://safeall.in/" rel="nofollow">Hikvision Full HD & Night Vision Camera Kit</a>Ram Chauhanhttps://www.blogger.com/profile/09344950839715197141noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-83750760083340163022016-11-13T22:59:03.651-08:002016-11-13T22:59:03.651-08:00Sigh... you could plow through, straighten out, an...Sigh... you could plow through, straighten out, and rebuild Bowdoin *after* building the extension.Nathanaelnoreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-12973408857268871502016-11-11T16:16:20.122-08:002016-11-11T16:16:20.122-08:00This blog has covered how BRT doesn't really w...This blog has covered how BRT doesn't really work in Boston ad nauseam. BRT is certainly worth some investment, but due to the layout of the streets and their general narrowness, BRT is unlikely to ever supplant rail as the main workhorse in Boston (BRT can't scale well unless it has wide rights-of-way, which we don't have). The urban ring is a round-peg-square-hole situation (kind of like the Silver Line) using BRT to do something it's not particularly good for. Once you're on a separated ROW, especially in a tunnel, electrified rail service is far superior to buses for a number of reasons (tighter clearances, faster service, much less ventilation, etc).<br /><br />BRT wouldn't function well as a circle because there's no coherent circle. The routes shown are generally no faster than going in and out of the core. Certain portions could have upgraded service, but to create service fast enough to compete with the rail system, you're talking about new rights-of-way, bridges and tunnels. Those get expensive real fast. Fast enough that you're better off doing things like the Red-Blue connector.Arihttps://www.blogger.com/profile/06058285362842737187noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-40002166531665872932016-11-11T16:12:39.466-08:002016-11-11T16:12:39.466-08:00There's a pretty easy solution for Bowdoin: ma...There's a pretty easy solution for Bowdoin: make it an outbound-only station. You could probably have one-way faregates turnstiles in that case. The outbound platform is six cars long, but the inbound barely 4 (I guess I hadn't realized how short it is!). Then Charles is a two-way station. That's probably cheaper than major infrastructure changes, although plowing through Bowdoin to straighten out the tracks might make more sense. Arihttps://www.blogger.com/profile/06058285362842737187noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-26091518629134974282016-09-12T12:03:25.220-07:002016-09-12T12:03:25.220-07:00Chuo line does have tail tracks at Tokyo. They'...Chuo line does have tail tracks at Tokyo. They're not long enough to let a full train proceed beyond the end of the platform and park there, but they are long enough to allow trains to enter the platform at a higher speed than if they didn't exist and there were buffers at the end of the tracks.Owen Evanshttps://www.blogger.com/profile/15934578266643759835noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-35527974727142639422016-09-11T16:04:37.616-07:002016-09-11T16:04:37.616-07:00What if the best bang for your buck isn't more...What if the best bang for your buck isn't more infrastructure, but better bus service or even BRT around the city?<br /><br />It might be the most socially equitable/fair expenditure as well<br />Ask anyone who doesn't have a car how good MBTA bus service is. People who park and ride or come in through commuter rail stations just at peak commuting weekday times have no idea how good they have it.<br /><br />I've always thought that the Urban Ring should not have died (as it apparently seems to have)<br />[See https://www.massdot.state.ma.us/theurbanring/images/LPA_Figure.pdf]<br /><br />Lastly, there is no circular line on the MBTA and this BRT would function as such. It would also help the rest of the system function a bit better. Ed Bourquehttps://www.blogger.com/profile/00550814801097119168noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-2445072083649770862016-09-09T08:57:24.763-07:002016-09-09T08:57:24.763-07:00Alewife Yard has 10 mph crossovers as you can see ...Alewife Yard has 10 mph crossovers as you can see pointed out in the same photo album. I'm also not sold on the value of tail tracks, after all, the Chuo Line terminal in Tokyo doesn't have them and still has no trouble turning over 20 tph, which is more than any rapid transit line in Boston. crzwdjkhttps://www.blogger.com/profile/06394805356595604336noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-41208952057154196492016-09-09T04:50:02.913-07:002016-09-09T04:50:02.913-07:00Comments re: train storage. . .
Bowdoin Station a...Comments re: train storage. . .<br /><br />Bowdoin Station and the loop have to be partially demolished to continue the tunnel on-alignment. It's one of the tightest loops on the system, and would be a huge speed clog and headway limiter if all trains in and out of Charles MGH station had to ride a half-loop's curve. As speed-restricted as Harvard curve on the Red Line if the trains are just passing through; twice as speed-restricted if an out-of-service set is being maneuvered for storage mid-loop. If Blue has a future being extended north to Lynn or beyond the loop is going to limit headways by making Blue more susceptible at peak load to bunching downtown near the end of an inbound run to Charles. That in turn is going to make on-platform turnbacks much harder to keep in balance for starting the outbounds on accurate headways than it is at Alewife, Forest Hills, Oak Grove, and Wonderland where everything that comes in can usually go immediately back out without schedule correction. You would need to stock more idling trainsets at Charles during peak load as schedule-correcting relief valve for keeping end-of-run inbound bunching from spilling over to start-of-run outbound bunching. The most precise signaling tech in the world is only going to paper that vulnerability to a certain extent; it'll be a perpetually brittle and exploitable concern. So the act of trying to preserve storage space by saving the loop ends up requiring you to build more total storage space. Not worth it when plowing through the west-end wall of the Bowdoin platform to keep to a straight tunnel alignment allows a fully at-speed tunnel and turnback platform that can behave at even keel for both directions a la Alewife or Forest Hills.<br /><br />Pocket tracks are not going to be doable because you simply don't have enough length to do them right. Current end-of-track at S. Russell St. and the would-be end of the Charles MGH platform at the first piling for the Red Line El upstairs is 1075 ft. To fit 2 six-car trainsets of storage (WITHOUT any retained loop, per above) next to a 300 ft. platform you would have to cram in the tightest-possible turnouts, akin to Blandford St. yard on the B Line. That kind of compression is woefully inadequate for cycling trains out of service. Movements would be slow enough to induce a delay in another approaching train's headway. It would be practical enough for stuffing an out-of-service train that won't be moving again for awhile, but would not work for shift changes or staging run-as-directeds. Unlike Oak Grove and Wonderland where out-of-service trains just deadhead short-distance through the outskirts of the line to/from Wellington or Orient Heights yards, Charles on the other side of downtown will need to be set up as fluidly as Forest Hills and Alewife for hot-swapping in regular service from adjacent storage. And that means higher-speed, wider-spaced crossovers like Alewife Yard has (see pics here): https://sery2831.smugmug.com/Transit/Red-Line-Shots/i-ZD85z73/L. Alewife can summon an off-shift train to or from the platform at full speed without fouling the slot for an on-platform turnback with an excruciatingly slow crawl. It's also pre-provisioned to work as a fluid mid-line yard for slipping deadheads to/from Arlington if the line is extended. The crossover space needed at Charles to perform roughly similar end-of-line tasks at no ops penalty simply isn't available between S. Russell St. and the would-be Charles Under platform. Therefore, tail tracks are the only non-crippled way to build it if you want a Blue Line set up flexibly enough to extend north to Lynn at no future ill effects to downtown bunching.<br /><br />Ironically, the only thing the stupid deep bore build has going for it is that by bypassing some old tunnel structures you probably would have the clean room to build a fluidly functional center pocket. But in no way would that price out better than cut-and-cover + tail tracks.F-Line to Dudleyhttp://www.archboston.org/community/member.php?u=2007noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-79647542006808899132016-09-07T19:37:39.397-07:002016-09-07T19:37:39.397-07:00Every other train coming in to a station with a cr...Every other train coming in to a station with a crossover before it has to slow for the crossover (SOP for the T, except at Ashmont and Wonderland), so there are no savings there. This could probably be solved with signal logic, with an approach signal leading to the platform and a restricted signal once there. Tail tracks may save a few seconds, but at what cost? If need be the northernmost track could be built a bit longer to allow more favorable signals, but there's a pretty quick cost-benefit tradeoff here.<br /><br />If the only metric transit is judged on is how much money it makes, then maybe someone nearby (cough MGH cough) might have interest in better access to its facility.Arihttps://www.blogger.com/profile/06058285362842737187noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-63464167399580498892016-09-07T12:57:18.787-07:002016-09-07T12:57:18.787-07:00I don't want to go easy on the mbta or massdot...I don't want to go easy on the mbta or massdot (see extension, green line) but there really is no upside for the mbta to expand service since the only metric "people" judge the mbta on is whether the lose money or not, and that judgement is based on sales tax revenues(!). The blame need to go back to the legislature and the governor, who need to tell the mbta that these things are needed and fund them.<br /><br />Also, I thought tail tracks are also useful so that the train doesn't have to slow so much before entering the last station, and therefore helping potential headways.<br />geep9noreply@blogger.comtag:blogger.com,1999:blog-293100068373105830.post-45232422804254629742016-09-07T11:58:01.958-07:002016-09-07T11:58:01.958-07:00Yet more reprehensible abuse of the public trust b...Yet more reprehensible abuse of the public trust by MassDoT and the administration (not that MassDoT's behavior is unique to the present one). It's especially frustrating since it means that we won't be able to trust the NSRL feasability study in light of Baker and Pollack's opposition and that MassDoT is willing to compromise the region's future for God knows what. <br /><br />According to Massbenchmarks, right now is the best time to do projects like this (https://urbanliberty.wordpress.com/2016/02/18/massbenchmarks-state-needs-transit-investment/) and, judging by the way the region's roads seem to be at or over capacity, any increase in the MBTA's capacity or connectivity is going to have huge gains for the T.Matthew M. Robare https://www.blogger.com/profile/01238656296410351634noreply@blogger.com