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Could the kneeling bus technology be incorporated onto single level railcars?

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Posted by CSSHEGEWISCH on Monday, June 8, 2015 6:49 AM

The IC South Chicago branch operates on a fenced private right-of-way down the middle of 71st Street, it isn't quite street running like South Shore in Michigan City.

The daily commute is part of everyday life but I get two rides a day out of it. Paul
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Posted by Buslist on Thursday, June 11, 2015 8:56 PM

Having somewhat criticised this idea note the following feature of the new CTA 5000 series L cars!

 

  • hydraulic active vehicle suspension system to lower car floor height at platforms

I had forgotten about this feature of the 5000s.

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Posted by CSSHEGEWISCH on Friday, June 12, 2015 12:03 PM

I'm not sure how much this feature will be used.

The daily commute is part of everyday life but I get two rides a day out of it. Paul
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Posted by Buslist on Friday, June 12, 2015 12:50 PM

CSSHEGEWISCH

I'm not sure how much this feature will be used.

 

It's my understanding that it operates each time the doors are opened on 5000 series cars, although I can't say I've ever detected it when riding them.

From CTA's web site on the features of the 5000s.

"These cars also have an active suspension system that helps to better align the interior car floor with the height of station platforms in a variety of conditions."

I was told by the Bombardier Engineers that the cars sit high to provide adequate clearance for the AC propulsion equipment. The cars then lower at the stations (when dynamic clearance isn't an issue) to align with platform heights.

But the point is we've all been telling the OP "it's a silly question" and "do some research" when to a limited extent (not as much kneeling as on a bus) it actually exists.

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Posted by Buslist on Friday, June 12, 2015 8:39 PM

Wizlish

 

Instead, it jacks DOWN the conventional suspension.  

 

All the kneeling buses I have worked with did so by evacuating the right front air bag. Can you imagine the air suspension system trying to cope with a jack trying to collapse one of its air bags?

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Posted by CMStPnP on Saturday, June 13, 2015 9:30 AM

Kind of related to the topic but not exactly.....BOARDING PLATFORM HEIGHT

I actually like the former step up to the train via vestibule stairs.    I think two things are happening here.    One they are trying to cut costs for boarding of physically challenged people.     Two U.S. Citizens are getting obese and no longer like to climb anything.

High level platforms are more of an eyesore at rural stations than sidewalk level platforms in my opinion.

I am fine with mixed high level and low level I guess with maybe 1 gradual slope between the two BUT what I don't like is when they intermix the two high level then low level then high level again (DART is guilty of this at some stations)........again it looks stupid and detracts from the surrounding architecture.

So my choices are low sloping to high with one ramp.   All High Level or All Low Level.

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Posted by wccobb on Saturday, June 13, 2015 6:58 PM

The guys with pickup trucks are properly laughing at this mass of stupidity.  It's a long way from the ground to the floors of their trucks and for this such as JC Whtney has bolt-on retractable steps.  They fold down when needed and fold up when not needed.  It'll take some good old-fashioned engineering to resolve the details: how to attach the retractable step, how to make it work, how to power it, when to use it, etc. etc.  Most obvious that if this can be done on a pickup truck, it can be done on a railroad car.  Does give cause to ponder: he who starts something like this ... which is larger, his IQ or his shoe size ?  Oh well ...

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Posted by CSSHEGEWISCH on Monday, June 15, 2015 6:55 AM

Retractable steps do not meet the requirements of the Americans With Disabilities Act.  Metra has at least one car in each train that is equipped with a retractable lift for wheelchair passengers, and I'm sure that Amtrak and the other various suburban rail operators have similar equipment.

The daily commute is part of everyday life but I get two rides a day out of it. Paul
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Posted by Buslist on Monday, June 15, 2015 7:43 AM

wccobb

The guys with pickup trucks are properly laughing at this mass of stupidity.  It's a long way from the ground to the floors of their trucks and for this such as JC Whtney has bolt-on retractable steps.  They fold down when needed and fold up when not needed.  It'll take some good old-fashioned engineering to resolve the details: how to attach the retractable step, how to make it work, how to power it, when to use it, etc. etc.  Most obvious that if this can be done on a pickup truck, it can be done on a railroad car.  Does give cause to ponder: he who starts something like this ... which is larger, his IQ or his shoe size ?  Oh well ...

 

Some time back in the 60s I was on a fan trip on the DM&IR. The equipment was the usual mix of Q rolling stock, but in the consist was an older coach either DM&IR or NP I forget witch. But anyway the car had the unusual equipment that had a large lever in the vestibule against the outside wall. When pulled up a step under the usual vestibule steps swung out eliminateing the need for a step box. Always wondered why this did not become standard . Never saw this anywhere else.

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Posted by Deggesty on Monday, June 15, 2015 10:15 AM

CSSHEGEWISCH

Retractable steps do not meet the requirements of the Americans With Disabilities Act.  Metra has at least one car in each train that is equipped with a retractable lift for wheelchair passengers, and I'm sure that Amtrak and the other various suburban rail operators have similar equipment.

 

On the last trip that my wife took, she sat in a transfer chair (lighter and easier for me to manage than a wheel chair was) to move around in. At most stops, a ramp (carried in the car) was used to move her on or off the train; at one stop, a power lift was used--and it took longer to set it in place that it took to place a ramp. I have noticed the presence of a power lift at each of many stations, now. However, a lift is almost absolutely necessary for gaining access to Viewliner and other single-level cars with high floors.

Johnny

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Posted by daveklepper on Monday, June 22, 2015 8:26 AM

s

Stutgartt, with its high platforms in the middle of streets, has all three conditions:  Paved track but reserved for light rail only (and emergency vehicles), center reservation without fensing, center reservation with fensing, for higher speed portions of lines.  The latter duplicates the South Chicago Metra Electric conidtions.   Some of the stations, in the middle of streets, have street furniture including canopies.

Once you have canopies and benches and ticket machines, high platforms aren't much of an eyesore.

This is also true of the South Chicago Branch.

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Posted by daveklepper on Monday, June 22, 2015 8:33 AM

I am surprised about that news about the CTA 5000s.  I don't think for one moment that it is a good idea, and think CTA made a dumb decision to accept it.  Just one more item to maintain.   Other car-builders and other systems seem to do perfectly well with the necessary equipment for AC-motor propulsion without this extra complication.  Boston's Blue Line cdars have even more restrictive clearances than CTA.

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