Central Square signal issue

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Central Square signal issue

Postby boblothrope » Tue Mar 03, 2015 2:50 pm

For the last few months, northbound Red Line trains leaving Central have ground to a halt a few times before getting going. Is there a problem with the cab signals there?
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Re: Central Square signal issue

Postby Gerry6309 » Wed Mar 04, 2015 11:55 pm

boblothrope wrote:For the last few months, northbound Red Line trains leaving Central have ground to a halt a few times before getting going. Is there a problem with the cab signals there?

Its our old friend the STOP - NO CODE. The signal signal isn't getting through.
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The next stop is Washington. Change for Forest Hills Trains on the Winter St. Platform, and Everett Trains on the Summer St. Platform. This is an Ashmont train, change for Braintree at Columbia.
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Re: Central Square signal issue

Postby dieciduej » Thu Mar 05, 2015 2:53 am

You can add Tufts Medical Center SB just outside the station towards Back Bay, to the list of bobbing signals.

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Re: Central Square signal issue

Postby Gerry6309 » Fri Mar 06, 2015 3:16 am

dieciduej wrote:You can add Tufts Medical Center SB just outside the station towards Back Bay, to the list of bobbing signals.

JoeD

The problem is that there is no problem. The pickup on the car has signal until the car starts moving, then loses it. The ATO stops the train, and voila - good signal!
Gerry. STM/BSRA

The next stop is Washington. Change for Forest Hills Trains on the Winter St. Platform, and Everett Trains on the Summer St. Platform. This is an Ashmont train, change for Braintree at Columbia.
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Re: Central Square signal issue

Postby CRail » Fri Mar 06, 2015 8:52 am

I wonder why that never happens on the Blue Line...
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Re: Central Square signal issue

Postby MBTA3247 » Fri Mar 06, 2015 12:17 pm

CRail wrote:I wonder why that never happens on the Blue Line...

It may not be because of faulty ATO pickups, but Blue Line trains can suffer the same result from faulty trip arms.
"The destination of this train is [BEEP BEEP]" -announcement on an Ashmont train.
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Re: Central Square signal issue

Postby Gerry6309 » Fri Mar 06, 2015 9:13 pm

CRail wrote:I wonder why that never happens on the Blue Line...

You know why! @#$%&!!!
Gerry. STM/BSRA

The next stop is Washington. Change for Forest Hills Trains on the Winter St. Platform, and Everett Trains on the Summer St. Platform. This is an Ashmont train, change for Braintree at Columbia.
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Re: Central Square signal issue

Postby Gerry6309 » Sat Mar 07, 2015 9:33 pm

Gerry6309 wrote:
CRail wrote:I wonder why that never happens on the Blue Line...

You know why! @#$%&!!!

Did I blame any specific component?

If the trip arm is up, the signal is red. Period. The signal does not clear until the trip arm is fully down.

The signal turns red immediately when the block becomes occupied.

The trip arm remains down until the prior block is unoccupied.

Cab signal indication can be lost at any location at any time.You can't see it coming, and if you have been running on anything more permissive than a 10 code - YOU GET TRIPPED
Gerry. STM/BSRA

The next stop is Washington. Change for Forest Hills Trains on the Winter St. Platform, and Everett Trains on the Summer St. Platform. This is an Ashmont train, change for Braintree at Columbia.
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