B&M 1227 wrote:I believe this section of VTR and NECR is unsignalled paper railroad. I forget what the qualifications of PTC is... something about 12 or more trains per day? Is there a speed requirement? Is it required on all upstart rail service?
From
https://www.law.cornell.edu/cfr/text/49/236.1019" onclick="window.open(this.href);return false;
49 CFR 236.1019 - Main line track exceptions.
(c)Limited operations exception. FRA will consider an exception in the case of a track segment used for limited operations (operating in accordance with § 236.0 of this part) under one of the following sets of conditions:
(1) The trackage is used for limited operations by at least one passenger railroad subject to at least one of the following conditions:
(i) All trains are limited to restricted speed;
(ii) Temporal separation of passenger and other trains is maintained as provided in paragraph (e) of this section; or
(iii) Passenger service is operated under a risk mitigation plan submitted by all railroads involved in the joint operation and approved by FRA. The risk mitigation plan must be supported by a risk assessment establishing that the proposed mitigations will achieve a level of safety not less than the level of safety that would obtain if the operations were conducted under paragraph (c)(1) or (c)(2) of this section.
(2) Passenger service is operated on a segment of track of a freight railroad that is not a Class I railroad on which less than 15 million gross tons of freight traffic is transported annually and on which one of the following conditions applies:
(i) If the segment is unsignaled and no more than four regularly scheduled passenger trains are operated during a calendar day, or
(ii) If the segment is signaled (e.g., equipped with a traffic control system, automatic block signal system, or cab signal system) and no more than 12 regularly scheduled passenger trains are operated during a calendar day.
(3) Not more than four passenger trains per day are operated on a segment of track of a Class I freight railroad on which less than 15 million gross tons of freight traffic is transported annually.
Briefly and simply, 4 scheduled passenger trains per day is the limit for sections of tracks having less than 15 Million gross tons per year - Class I railroad or less. For less than Class I railroads, 4 scheduled passenger trains per day for unsignaled tracks, 12 scheduled passenger trains per day for tracks with block signal controls.
The tracks in question don't have block signals, therefore the 4 passenger trains per day limit. I'm assuming they have less than 15 million tons of freight service, but I'll admit I don't know how much there is. What I do know, is that 4 passenger trains per day increases to 12 passenger trains per day just by adding block signals to the affected tracks.
Amtrak runs 2 scheduled trains over the tracks in question, a single round trip. Adding just one commuter train round trip over the same tracks makes 4 scheduled trains. By adding block signals, the commuter trains could run a total of 5 round trips. Additionally, the section of tracks west of Essex Junction to Burlington doesn't have an Amtrak train on it now. So it would be possible to run 2 round trips commuter trains over it, with 1 round trip heading north towards St. Albans, and 1 round trip heading southeast towards Montpelier. Likewise, by routing the trains in a similar manner, with signal blocks installed, there could be 6 round trips of commuter rail running between Burlington and Essex Junction. Each Amtrak train round trip between St. Albans and Montpelier removes a potential round trip heading in each direction (north and southeast) from Burlington.
Block signals will be much cheaper to implement than Postive Train Control. I'm thinking 3 round trips commuter rail per day in each direction from Burlington, allowing 2 commuter rail round trips between St. Albans and Montpellier (or 3 Amtrak round trips, or 2 Amtrak round trips and 1 commuter rail round trip). Would be more than enough for this small metro area.
Any more service would require implementing Postive Train Control.
To Simplify short of PTC implementations, 6 round trips in each direction from Essex Junction wye is the limit with block signals, or just 2 round trips per direction from Essex Junction wye with no signals at all.