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#131
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Police target South Australian cyclists
scotty72 wrote:
No, I have heard this 7% trotted out. That is highly in dispute and I've heard a figure of about 45%. Your figure is doubtlessly simply calculated on - my car burns x litres of fuel and x litres of fuel emmits y kgs of exhaust. You have to also include the pollution costs of manufacturing, delivery, the endless promotional material for them. (A bicycle is a timy fraction of a car) It's not just the burning of fuel, it's the energy required to mine it, refine it, deliver it etc. I've heard estimates that the burning of fuel of a car is between 25% - 33% of its total pollution output. So, your 7% is a figure I'd expect the NRMA to use to downplay motor vechiles impact. I'd much prefer to believe the 45% as it would be far closer to reality. You can believe waht you want Scotty. According to a.. AUSTRALIA'S POLLUTING POWER Coal-fired electricity and its impact on .... BIGGEST CAUSE OF GREENHOUSE POLLUTION In Australia in 2000 the use of coal was responsible for the emission of 186 million tonnes (Mt) of CO2, the most significant greenhouse gas in ... a.. wwf.org.au/publications/australias_polluting_power.pdf About 97% of the electricity industry’s greenhouse gas emissions comes from 24 coal-fired power stations. This relatively small number of power stations produce an amount of greenhouse pollution equivalent to the annual emissions from about 40 million cars, four times Australia’s actual car fleet. Australia’s 24 coal power stations also produce more emissions than the total emissions from many entire countries, including Argentina, Belgium, Greece, Ireland, Israel, Malaysia, Pakistan, Portugal, Sweden, Switzerland, Thailand, Turkey, all eastern European countries apart from Russia and Poland, and all African countries apart from South Africa. But believe whatever you want. Theo |
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#132
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Police target South Australian cyclists
John Tserkezis wrote:
Quoting ARR Oct 1999: "259 Riding at night The rider of a bicycle must not ride at night, or in hazardous weather conditions causing reduced visibility, unless the bicycle, or the rider, displays: (a) a flashing or steady white light that is clearly visible for at least 200 metres from the front of the bicycle; and (b) a flashing or steady red light that is clearly visible for at least 200 metres from the rear of the bicycle; and (c) a red reflector that is clearly visible for at least 50 metres from the rear of the bicycle when light is projected onto it by a vehicle's headlight on low-beam." What I really don't get, is the requirement for part (C). I would have thought the active lighting in part (B) would make a reflector redundant. Active lighting can fail. All is susceptible to at least one of the following: 1. Incandescent bulbs regularly blow. 2. Batteries can fail or go flat before you reach your destination. 3. Dynamos stop generating when the wheel stops. I'm surprised a forward-facing white or yellow reflector isn't also required. But a rear lighting failure is more likely to go unnoticed. John |
#134
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Police target South Australian cyclists
A nice set of stats that completely ignore and seek to obfuscate the point I was making. But, appologising for the oil industry makes you happy, so.... Scotty Theo Bekkers Wrote: scotty72 wrote: No, I have heard this 7% trotted out. That is highly in dispute and I've heard a figure of about 45%. Your figure is doubtlessly simply calculated on - my car burns x litres of fuel and x litres of fuel emmits y kgs of exhaust. You have to also include the pollution costs of manufacturing, delivery, the endless promotional material for them. (A bicycle is a timy fraction of a car) It's not just the burning of fuel, it's the energy required to mine it, refine it, deliver it etc. I've heard estimates that the burning of fuel of a car is between 25% - 33% of its total pollution output. So, your 7% is a figure I'd expect the NRMA to use to downplay motor vechiles impact. I'd much prefer to believe the 45% as it would be far closer to reality. You can believe waht you want Scotty. According to a.. AUSTRALIA'S POLLUTING POWER Coal-fired electricity and its impact on .... BIGGEST CAUSE OF GREENHOUSE POLLUTION In Australia in 2000 the use of coal was responsible for the emission of 186 million tonnes (Mt) of CO2, the most significant greenhouse gas in ... a.. wwf.org.au/publications/australias_polluting_power.pdf About 97% of the electricity industry’s greenhouse gas emissions comes from 24 coal-fired power stations. This relatively small number of power stations produce an amount of greenhouse pollution equivalent to the annual emissions from about 40 million cars, four times Australia’s actual car fleet. Australia’s 24 coal power stations also produce more emissions than the total emissions from many entire countries, including Argentina, Belgium, Greece, Ireland, Israel, Malaysia, Pakistan, Portugal, Sweden, Switzerland, Thailand, Turkey, all eastern European countries apart from Russia and Poland, and all African countries apart from South Africa. But believe whatever you want. Theo -- scotty72 |
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