From: jishnu@nospam.verizon.net
On 5/15/2015 2:12 PM, Joseph D. Korman wrote:
> On 5/15/2015 1:59 AM, Glen Labah wrote:
>> In article ,
>> Larry Sheldon wrote:
>>
>>> On 5/13/2015 16:23, Larry Sheldon wrote:
>>
>>>> Wife said WaPo said the train had been traveling at 100 MPH--about
>>>> twice
>>>> the post speed limit.
>>>>
>>>> I have just gotten on-line again--have not checked it out.
>>>
>>> Seems to correct.
>>>
>>> How can that be?
>>
>>
>> According to a series of posts here back when a similar Metro-North
>> derailment happened, there are apparently no "posted" speeds on the NEC.
>> The crew is expected to know the speed restrictions and that is that.
>>
>> I've been on a few cab rides. The alternating tie and ballast colors
>> create a high speed strobe light effect that over time I found to be
>> really disorienting. There may be some physiological impacts of this
>> that should be researched.
>>
> Photo at Metropark, note the backwards "90" for Philly bound trains on
> the normally NY bound track.
>
> http://www.thejoekorner.com/photos/nec-2002/7728013.jpg
>
> It still doesn't relieve the crews' knowledge of the civil restrictions.
> My son is a conductor on NJ Transit and had to know the civil
> restrictions to get qualified on each line.
Those speed limits apply to so called Class B trains like the Amtrak
Northeast Regionals and Acelas with tilt mechanism disabled. Class A
trains (Acelas with tilt enabled) are allowed to go through that curve
at 100mph.
With the complete operationalization of ACSES all these civil speed
limits will appear on the ADU in the cab, and the specific speed limit
applies to that class of train is the one that will appear. There are
five different classes of trains on the NEC which have different speed
limits that apply to them.
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