All Things WMATA 7000 Series

Discussion related to DC area passenger rail services from Northern Virginia to Baltimore, MD. Includes Light Rail and Baltimore Subway.

Moderators: mtuandrew, Robert Paniagua, therock

Re: All Things WMATA 7000 Series

Postby drwho9437 » Tue Feb 20, 2018 7:46 pm

I have not seen any 4 car trains but they should absolutely do that. There is no need for such capacity at certain times of day.

Longer headways means higher shop time and fewer drivers. I would certainly prefer 4 car trains at shorter headways with the same throughput of cars as 6 car trains in the low ridership hours.

Ridership could likely fit in a single car or at most 2 cars during much of the off-peak hours with my observations being only perhaps 20% of seats taken in typical cars.
drwho9437
 
Posts: 19
Joined: Fri Jul 11, 2014 11:41 pm

Re: All Things WMATA 7000 Series

Postby davinp » Thu Feb 22, 2018 9:34 am

It appears the design of the 7000 series can be configured to run in either 4 or 8 car trains, but not 6.

They could run 4 car 7000 series trains on nights and weekends when ridership is lower. This would also save electricity as the 7000 series use more electricity than the older cars
davinp
 
Posts: 569
Joined: Sun Nov 20, 2005 8:03 pm
Location: Woodbridge, VA

Re: All Things WMATA 7000 Series

Postby mtuandrew » Thu Feb 22, 2018 11:38 am

Labor hours are a much bigger expense than juice, but I agree. For late service WMATA should consider running 4-car Blue service in particular, whether full-line, Rosslyn-Springfield, or Alexandria-Springfield only. If splitting a set to operate means that another full set can get maintenance in a night, I’m all for it.
User avatar
mtuandrew
 
Posts: 4981
Joined: Tue Feb 20, 2007 2:59 am
Location: the Manassas Gap Independent Line

Re: All Things WMATA 7000 Series

Postby Sand Box John » Thu Feb 22, 2018 1:36 pm

"davinp"
It appears the design of the 7000 series can be configured to run in either 4 or 8 car trains, but not 6.

They could run 4 car 7000 series trains on nights and weekends when ridership is lower. This would also save electricity as the 7000 series use more electricity than the older cars


I've said it multiple times, there is nothing technically or mechanically preventing WMATA from running 7k cars in 6 car consists. The 7k cars are married pairs just like their aluminum cousins. The only difference is, they don't have a revenue service operators cab on the F end of the B car of the married pair.
John in the sand box of Maryland's eastern shore.
User avatar
Sand Box John
 
Posts: 2814
Joined: Sun Jan 01, 2006 8:55 pm
Location: Hebron Maryland

Re: All Things WMATA 7000 Series

Postby MCL1981 » Fri Feb 23, 2018 6:32 am

I have zero faith in WMATA personnel constantly assembling and disassembling train sets switching between 6 and 8 car configurations based on time and day. They can barely manage to operate without incident without having to do that.
MCL1981
 
Posts: 686
Joined: Sun Nov 11, 2012 9:23 am

Re: All Things WMATA 7000 Series

Postby Sand Box John » Fri Feb 23, 2018 8:19 am

"MCL1981"
I have zero faith in WMATA personnel constantly assembling and disassembling train sets switching between 6 and 8 car configurations based on time and day. They can barely manage to operate without incident without having to do that.


Why. They have been doing it routinely for most of the last 40 years.

When Silver Spring was the terminal station back in the 70s and 80s I witness WMATA adding or subtracting cars from trains at the platform several times.
John in the sand box of Maryland's eastern shore.
User avatar
Sand Box John
 
Posts: 2814
Joined: Sun Jan 01, 2006 8:55 pm
Location: Hebron Maryland

Re: All Things WMATA 7000 Series

Postby MCL1981 » Fri Feb 23, 2018 9:34 am

Their recent performance doesn't leave me with much faith these days.
MCL1981
 
Posts: 686
Joined: Sun Nov 11, 2012 9:23 am

Re: All Things WMATA 7000 Series

Postby Sand Box John » Fri Feb 23, 2018 8:13 pm

"MCL1981"
Their recent performance doesn't leave me with much faith these days.


Your lack of confidence is likely the result of WMATA's contradictive and convoluted operating rules, not the actual ability of employees to safely preforming said task.
John in the sand box of Maryland's eastern shore.
User avatar
Sand Box John
 
Posts: 2814
Joined: Sun Jan 01, 2006 8:55 pm
Location: Hebron Maryland

Re: All Things WMATA 7000 Series

Postby YOLO » Fri Feb 23, 2018 8:54 pm

Couple of observations:

Spotted 7490-7491 on SV

I've stopped seeing the ABABABBA layout and now every 7K seems to be ABBAABBA. I wonder why...
YOLO
 
Posts: 247
Joined: Sun Jul 08, 2012 12:50 pm

Re: All Things WMATA 7000 Series

Postby Sand Box John » Sat Feb 24, 2018 8:23 am

"YOLO"
Couple of observations:

Spotted 7490-7491 on SV

I've stopped seeing the ABABABBA layout and now every 7K seems to be ABBAABBA. I wonder why...


Likely to convince folks that the 7k cars are are married quads to erase the idea that they can be run in 6 car consists.
John in the sand box of Maryland's eastern shore.
User avatar
Sand Box John
 
Posts: 2814
Joined: Sun Jan 01, 2006 8:55 pm
Location: Hebron Maryland

Re: All Things WMATA 7000 Series

Postby srepetsk » Sat Feb 24, 2018 12:15 pm

YOLO wrote:Couple of observations:

Spotted 7490-7491 on SV

I've stopped seeing the ABABABBA layout and now every 7K seems to be ABBAABBA. I wonder why...

7499 was in acceptance testing on the 18th.
srepetsk
 
Posts: 228
Joined: Sat May 16, 2015 12:57 am

Re: All Things WMATA 7000 Series

Postby Head-end View » Sat Feb 24, 2018 7:56 pm

Sounds like it's just simpler for WMATA to run 4 and 8 car consists. A minimum of cutting and assembling different amounts of cars. I kind of agree, it's better to keep things simple. :wink:
Head-end View
 
Posts: 2497
Joined: Thu Mar 11, 2004 10:00 pm
Location: The second row on a SEPTA Silverliner V

Re: All Things WMATA 7000 Series

Postby justalurker66 » Sat Feb 24, 2018 8:07 pm

If the yard builds the consists consistently the dispatcher never has to ask if the center of the train has cabs when there is a need to spit the train.
abbaabba prevents cutting two end cars to create a six car train, which would be nice for capacity if one of the end pairs failed.
But I can see where abbaabba gives a consistent split point. Always a full cab at each end of the train.
User avatar
justalurker66
 
Posts: 2217
Joined: Fri May 15, 2009 11:20 pm

Re: All Things WMATA 7000 Series

Postby Head-end View » Sat Feb 24, 2018 9:00 pm

Exactly my point. A lot to be said for consistency. :wink:
Head-end View
 
Posts: 2497
Joined: Thu Mar 11, 2004 10:00 pm
Location: The second row on a SEPTA Silverliner V

Re: All Things WMATA 7000 Series

Postby smallfire85 » Tue Feb 27, 2018 10:18 am

Saw 7500-7503 testing on the former rush-plus yellow route this morning. Realistically, 7499 is car #500, but the number threshold is passed!

An aside to running shorter consists: WMATA's current berthing policy is to have all revenue trains stop at the end of the platform (8 car marker) to service the platform. Running shorter trains would require a rehash of the policy (including training all the operators brought on after the enactment of the current policy) to have shorter consists stop at the appropriate car marker - which is missing at some stations, or give customers longer platform walks to/from the exits at stations like Addison Road.
User avatar
smallfire85
 
Posts: 111
Joined: Sat Dec 03, 2011 12:29 am

PreviousNext

Return to DC - Maryland - Virginia Area Passenger Rail: MTA(MARC), VRE, WMATA(Metro)

Who is online

Users browsing this forum: Exabot [Bot] and 4 guests