by mtuandrew
What actually are the grades on the RF&P and SAL? I don’t think we need to worry about dual-modes encountering excessive grades on any Amtrak route; as far as I know they aren’t planning to operate over Saluda
Railroad Forums
Moderators: GirlOnTheTrain, mtuandrew, Tadman
TurningOfTheWheel wrote: ↑Sat Oct 03, 2020 6:40 pmInfrastructure, 1st you need cab signals to travel over 79mph the I-ETMS system would have to be up dated with new braking curves for the upgraded speeds. Not to count roadbed and signal upgrades and if there are cab signals then CSX would need same for their locomotives. This was once talked about in New York all NYS wanted was 90mph and CSX fought tooth and nail. We still have 79mph max west of CP169(Hoffmans) and I dont see it getting any faster in my last 7ish years behind the throttle.electricron wrote: ↑Sat Oct 03, 2020 8:59 am Going faster, up to 110 mph, can be accomplished with Charger diesel locomotives.Is it really as simple as a train with Chargers can run SOB-ERI at 110 while the P42s can't? The LSL already hits 110 south of SDY, so that explanation doesn't really make a whole lot of sense. You've got hundreds of miles of perfectly straight track in Indiana, Ohio, and Pennsylvania just begging to be used for HrSR. Is CSX holding up the infrastructure improvements necessary to reach 110, or will they just not give clearance to Amtrak to run trains that fast on that route?
John_Perkowski wrote: ↑Sat Oct 03, 2020 11:59 am I believe improvements will be contingent on the States to pony up for a third to a half.And that's where ideas go to die.
rcthompson04 wrote: ↑Mon Oct 05, 2020 8:52 am For me a less sexy improvement that will speed things up is eliminating at-grade crossings on mainlines as much as possible. This is something that is a safety improvement necessary for higher speeds that is easy to get bipartisan and railroad support.Shorter blocks with more signal aspects
Other things I would do involve capacity and signal improvements.
Railjunkie wrote: ↑Sun Oct 04, 2020 10:56 pmAssuming the project is paid for by federal funding, including cab signals for CSX's own locomotives, does the conversation change at all? Again, a lot of these projects are contingent on a massive railway funding bill passing the new Congress.TurningOfTheWheel wrote: ↑Sat Oct 03, 2020 6:40 pmInfrastructure, 1st you need cab signals to travel over 79mph the I-ETMS system would have to be up dated with new braking curves for the upgraded speeds. Not to count roadbed and signal upgrades and if there are cab signals then CSX would need same for their locomotives. This was once talked about in New York all NYS wanted was 90mph and CSX fought tooth and nail. We still have 79mph max west of CP169(Hoffmans) and I dont see it getting any faster in my last 7ish years behind the throttle.electricron wrote: ↑Sat Oct 03, 2020 8:59 am Going faster, up to 110 mph, can be accomplished with Charger diesel locomotives.Is it really as simple as a train with Chargers can run SOB-ERI at 110 while the P42s can't? The LSL already hits 110 south of SDY, so that explanation doesn't really make a whole lot of sense. You've got hundreds of miles of perfectly straight track in Indiana, Ohio, and Pennsylvania just begging to be used for HrSR. Is CSX holding up the infrastructure improvements necessary to reach 110, or will they just not give clearance to Amtrak to run trains that fast on that route?
rcthompson04 wrote: ↑Mon Oct 05, 2020 8:52 am For me a less sexy improvement that will speed things up is eliminating at-grade crossings on mainlines as much as possible. This is something that is a safety improvement necessary for higher speeds that is easy to get bipartisan and railroad support.Eliminating grade crossings on mainlines is favored by freight train companies, they rarely object to governmental agencies building new grade separated public crossings when public financing is appropriated for them. But that is an entirely different issue when it comes to closing private crossings, most of which do not even have anything more than cross buck signs.
Other things I would do involve capacity and signal improvements.
electricron wrote: ↑Mon Oct 05, 2020 11:06 amFor me getting to 110mph is the goal. 90 mph would be a massive improvement on some lines.rcthompson04 wrote: ↑Mon Oct 05, 2020 8:52 am For me a less sexy improvement that will speed things up is eliminating at-grade crossings on mainlines as much as possible. This is something that is a safety improvement necessary for higher speeds that is easy to get bipartisan and railroad support.Eliminating grade crossings on mainlines is favored by freight train companies, they rarely object to governmental agencies building new grade separated public crossings when public financing is appropriated for them. But that is an entirely different issue when it comes to closing private crossings, most of which do not even have anything more than cross buck signs.
Other things I would do involve capacity and signal improvements.
A major political obstacle Texas Central has faced is from rural land owners desiring private access (crossings) across their new build HSR corridor. It is far easier to accommodate grade separated private crossings on a brand new alignment than on the grades of an existing alignment. Eliminating private crossings on an existing corridor is not as politically feasible as some might suggest.
The reason so many higher speed train proposals are limited to 110 mph is this issue with private crossings. The reason freight railroads desire limiting higher speed rail speeds to 90 mph or less is the issue with signaling, both train controls and public at-grade crossings.
RRspatch wrote: ↑Sat Oct 03, 2020 12:53 am New York to Albany or perhaps Buffalo. The line west of Albany was originally four tracks wide. Let CSXT have the two north tracks and Amtrak the two south tracks. I believe the four track right of way went all the way to Cleveland in the NYC days.This comes up again and again and again.
rcthompson04 wrote: ↑Mon Oct 05, 2020 8:52 am For me a less sexy improvement that will speed things up is eliminating at-grade crossings on mainlines as much as possible. This is something that is a safety improvement necessary for higher speeds that is easy to get bipartisan and railroad support.That may not really help. They can now go 110 through a standard protection crossing and 125 through a barrier type crossing. If you ride the NEC today through Connecticut and Rhode Island, you won't get close to those speeds though the grade crossings.
StLouSteve wrote: ↑Tue Oct 06, 2020 8:41 am I believe battery technology will improve significantly in the next few years so that cat or third rail will no longer be required over an entire route but could be spaced out to certain sections. In between these wired sections, engines would draw from batteries. This might change the economics of electrifying a route.I don’t think you’ll have takers on the freight side, unless it’s a short line (think port authority railroads or something like Belt Ry of Chicago) being given hefty grants. On the passenger side, sure - and especially if you wire up a mile on either side of each station, so the grid can supply most of the high-amperage power for acceleration. The technology is arguably here today, at least for lightweight units like the Stadler FLIRT.
Once installed, this could be used for freight or passenger power and would be faster and cleaner. (Weird analogy but think of NYC Hudsons drawing water from track pans at speed).