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Old October 3rd, 2005, 06:32 AM   #181
cal_t
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Cause it's so costly! there's third rail activation tech to be installed and so on and so forth
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Old October 3rd, 2005, 04:50 PM   #182
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Quote:
Originally Posted by ch1le
/\ that is very smart! i wonder why isnt it used anywhere else!
but what happens if you step on both rails at one time, you die?
nothing the power is on that when the train is above
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Old October 3rd, 2005, 08:33 PM   #183
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Quote:
Originally Posted by ch1le
/\ that is very smart! i wonder why isnt it used anywhere else!
but what happens if you step on both rails at one time, you die?
No!!!

The electric rails are split into short sections (on a few metres long) and they use electronics so that the live rail only has power when the tram is above it.

A secondary special safety system ensures that the rail is not live when the tram passes, in case the the "normal" system has not worked. When this secondary special safety system activates it also switches off the section of live rail "permamently" until an track inspection person comes to investigate why the normal system did not work.

But things have not gone well for Bordeaux, as this secondary special safety system has been used too often, and it has happened that when several adjoiining sections of electric rail have been switched off in this way the trams have become stranded - without electricity.

It is yet possible that the Mayor (of Bordeaux) will replace the track power with overhead wires.

However, if the system can be made to work with almost 100% reliability then
other cities may use it too. I have heard that one city in Poland is very interested - I*think* its Krakow, but an not 100% sure.

"ground" power systems are not new - London and Washington DC used to use the conduit system, which was similar in theme - although the power rails were below ground and were reached by a special power collector using a slot between the rails. Although this system worked well it was very expensive to install and maintain. The conduit system was also blamed for creating problems with stray electric currents interfering with the subterranean utilities - especially in rainy weather when water entered the conduit.

In a similar way San Francisco uses a physical cable which is accessed from between the tracks.

Another ground power technology was the stud system which featured in several cities in the late 1800's. One example was Paris, France, where the studs (standing 5mm proud of the road surface) were located every 2.5 metres along the centre line between the two running rails. For safety these studs were only supposed to have been energised when a skate - located under a tramcar - passed over them, unfortunately however they sometimes remained live when the tramcar had passed, with unpleasant results for pedestrians and often fatal results for dogs. In Britain the stud system was also used for a short time in Wolverhampton, where the 'dancing horses' become almost legendary!


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Old October 4th, 2005, 12:49 AM   #184
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Quote:
Originally Posted by minato ku
lyon tram (france)
This must be the most bizaree design I ever seen, looks like a joke almost...
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Old October 4th, 2005, 01:25 AM   #185
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I think the Lyon tram it looks pretty cool.
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Old October 4th, 2005, 01:50 AM   #186
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yup Lyon tram is nice, unique design!!
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Old October 4th, 2005, 03:10 AM   #187
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this thread is dedicated to Oporto's new underground/lightrail/tramway network

http://www.skyscrapercity.com/showth...15#post5627715
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Old October 4th, 2005, 03:13 AM   #188
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Quote:
Originally Posted by shiver-me-timbers
I think the Lyon tram it looks pretty cool.
Lyon trams and metro have got a retro design very beautiful.
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川添 Kawazoe (riverside) 海斗 Kaito (big dipper of the ocean), in Japanese.
Yo si la ciudad no tiene metro, como que no es gran ciudad y entonces ya paso de vivir allí. Norreport+12000
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Old October 5th, 2005, 05:06 PM   #189
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^they are , look like caterpillar lol
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Old October 7th, 2005, 11:51 AM   #190
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This is a Lodz (PL) new tram.
Bombardier Flexity Outlook












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Old October 8th, 2005, 04:43 PM   #191
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New Alicante(Spain) mixed Train-trams,dual voltage(750 V dc and 1500 V dc)
Top speed 70km/h in City and 110km/h in Train mode(train thrust in light rail vehicle)


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Old October 8th, 2005, 06:23 PM   #192
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That Lyon tram is insane...
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Old October 8th, 2005, 07:50 PM   #193
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Wow, that's a rare picture...know why? That has wheels exposed...

Quote:
Originally Posted by hkskyline
Brussels

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Old October 8th, 2005, 08:34 PM   #194
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Hi guys!

I am in Istanbul on holidays and İ am taking lots of photos of its new tramway.
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川添 Kawazoe (riverside) 海斗 Kaito (big dipper of the ocean), in Japanese.
Yo si la ciudad no tiene metro, como que no es gran ciudad y entonces ya paso de vivir allí. Norreport+12000
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Old October 9th, 2005, 01:26 AM   #195
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Quote:
Originally Posted by beta29
Chemnitz and Duisburg (Germany) both cities have this tram called Variobahn!


They are also operating in Sydney, Australia, and I used to drive them. The 100% low floor version uses wheels mounted directly onto the motors. This results in far less bulk protruding into the passenger saloon compared to the Citadis and Combino.

Smooth, reliable, it's a shame that the Variotram/Variobahn design isn't more widely used.
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Old October 9th, 2005, 06:30 PM   #196
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Light Rail Vehicles - The Good, The Bad, & The Ugly

Here are some of the least attractive light rail vehicles that are in service in the United States along with other examples from the same two manufacturers that give hope for more attractive vehicles in the future:

The Good - Boston - Kinkisharyo - Dependable but unattractive:



The Bad - Boston - Ansaldo-Breda - A propensity for spontaneous derailment:


The Ugly - San Jose - Kinkisharyo - All the style and grace of a refrigerator:



The Hope for a Better Future - Athens, Milan, & Naples - Ansaldo-Breda




The Hope for a Better Future - Seattle & Phoenix - Kinkisharyo


Last edited by dimlys1994; March 10th, 2016 at 04:15 PM.
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Old October 10th, 2005, 07:53 AM   #197
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I don't think VTA trains r ugly; however, they could certainly look more modern & attractive.
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Old October 10th, 2005, 08:53 PM   #198
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There is no such thing as an ugly LRV in my book. All are more attractive than the prettiest buses out there, that is for sure...
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Old October 11th, 2005, 01:16 AM   #199
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Quote:
Originally Posted by Wally
There is no such thing as an ugly LRV in my book. All are more attractive than the prettiest buses out there, that is for sure...
Even this one?
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Old October 11th, 2005, 02:27 AM   #200
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Zagreb,


Nottingham


Vienna



Huston got nice ones too,
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