Safe Speed Forums

But, of course, this pollution isn't from the buses...so that must be good, then

Anyone have knowledge of or access to the real figures?

Just displacing where the carbon emissions come from to make himself some 'good' publicity... sinister

I wonder how much carbon is emitted in the production of a million pound bus?

I bet it's an awful lot... Probably more than a normal bus emits in a lifetime's use.

_________________
Paul Smith
Our scrap speed cameras petition got over 28,000 sigs
The Safe Speed campaign demands a return to intelligent road safety

[/quote]


Till some driver tries to go under a low bridge in the (presumed ) taller bus.

_________________
lets bring sanity back to speed limits.
Drivers are like donkeys -they respond best to a carrot, not a stick .Road safety experts are like Asses - best kept covered up ,or sat on

And as the article points out, the production of hydrogen is not 'friendly' in the slightest, so in the lifetime of these buses, including production cycle, I imagine they probably cause a lot more damage! just not in London, so he can claim reductions in CO2 in London

the usual negative backlash here i see




what makes you say that ?
just equating carbon footprint with cost ?

also worth bearing in mind the big issue with buses (vehicle in general) in cities is the local emissions..... if the emissions occur from an industrial at a power plant remote from the city centre then there are still benefits there.

Not only are the high-pressure cylinders kept in the roof, but the fuel cells and air conditioners....that has got to be some sort of weight !

Hope the london bombers don't appear anytime soon.

http://news.bbc.co.uk/1/hi/england/london/3391507.stm

not really a huge issue on a wide tracked, relatively low speed vehicle vehicle where handling isnt a priority.
and alot of packaging benefits from greater flat floorspace & lower entry level.

It's a very good start to equate carbon footprint with cost.

But you'll note that I'm 'wondering' and 'betting', not stating or asserting.

_________________
Paul Smith
Our scrap speed cameras petition got over 28,000 sigs
The Safe Speed campaign demands a return to intelligent road safety

No need for bombs, I imagine a sniper rifle would be sufficient to explode that bus.

Actually, given Ken's record with busses burning, is this really such a good idea?

I was thinking more about the weight with respect to the buses integrity.
It depends on how many cylinders are carried....but having all that weight carried by the vertical supports cannot be too clever....given the stop-start nature of the service.

Still, they may be alloy or composite....there must be a reason why the things are 1 million apiece

I assume they are single-deckers. If so, I don't think it would be a big problem to have the side & roof structure as rigid as a double-decker - they can cope with loads of people upstrairs (both from the stability and the strength point of view) so I wouldn't have thought it would be a problem. Depending on the size of the buses and the seating / standing layout, they might have to do stilt tests and rollover tests anyway.

If terrorists start running around London taking random pot-shots with sniper rifles, I don't think the presence or absence of hydrogen-fuelled buses will make much difference...

_________________
Chris

The ones that were on trial a couple of years ago when I last saw one were single-deckers - looked like modified Citaros from what I recall. I doubt you'd be able to fit a usefully-sized tank on the roof of a double decker whilst keeping it short enough to still fit along the same routes anyway...


...though I suppose they could do like the touring coaches (or that flame-throwing tank from WW2 - a variant of the Churchill IIRC, Crocodile perhaps?), and drag the tank around behind them on a trailer!



Quite, and some single deckers are already carrying quite hefty looking arcon packs up top.

_________________
Chris

If it DOES weight extra, imagine what they are going to do to the already pot hole ridden streets of London. Ahhh, the unforseen consequences

Sure it will, people getting shot in London doesn't make news, the same as cars being stolen in Liverpool doesn't make news. Exploding busses make news. News reports of exploding busses make terror.

Besides thinking about it, you wouldn't even need a sniper rifle, a handgun should be sufficient and it's not like those are in short supply in London now is it?

Oh no, the national media has never reported on a shooting in London, has it... It's all a question of context and unusualness - gangs/drug dealers/etc exchanging shots yet again might only make the local news, but a series of seemingly random killings of entirely ordinary people in ordinary situations would, I think, be quite likely to prick the interest of the (inter)national media. Remember the US sniper killings from a few years back?

_________________
Chris

The kind of hydrogen tanks I'm thinking of would (I imagine) take a fair bit of punishment (don't suppose handgun or rifle bullets would be a problem) before they "popped". Of course, if he was a good enough shot to get the valve / pressure regulator gear, that might be a different story - or if there was a leak that got ignited by some stray sparks generated by a bullet hitting the surface...