The former editor of NZ Trucking Magazine Jon Addison has written in the NZ Herald proposing that the rail network be ripped up and the corridors used to build dedicated trucking roads. I don't agree, I think the cost of that is prohibitive in itself and much of the rail network is too narrow to make that worthwhile (don't forget most railway lines are single track, which means one way roads!). I also think that some railway lines are economically viable (2 hourly freight trains on the main trunk line isn't a bad use of that corridor).
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However, he has made some very good points that those who worship rail as a religion, than simply a technology, often ignore:
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"New Zealand's rail network is constrained by more than its ageing bridges and locomotives. Its 3ft 6in (1067mm) narrow gauge tracks limit the speeds at which trains can operate and its 150 tunnels are too small to accommodate double-stacked containers, which have boosted rail efficiency overseas."
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"Taking the last of these first, the introduction of Euro 5 emissions standards in Europe this October and inevitably eventually in New Zealand will mean that in some urban environments the truck exhaust will be cleaner than the air entering its engine. Truck noise levels have also reduced significantly.
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While the fuel used by an efficient train will be less than that used by trucks carrying the same weight, this ignores the fact that freight is invariably carted by trucks at one end of the train trip and often at both ends. And at the transition, fuel is used by forklifts or container cranes and increasingly used to maintain the temperature of freight while its waiting to be moved.
While the fuel used by an efficient train will be less than that used by trucks carrying the same weight, this ignores the fact that freight is invariably carted by trucks at one end of the train trip and often at both ends. And at the transition, fuel is used by forklifts or container cranes and increasingly used to maintain the temperature of freight while its waiting to be moved.
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As far as driver efficiency is concerned, change is on the way. Most of the major automotive manufacturers are working towards driverless vehicles and some are predicting that they are less then 20 years away. All of the technology exists now, and some of it is already appearing in production vehicles.
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Interesting stuff indeed. He concludes by suggesting that maybe converting the rail network to roads wouldn't add up, but it is worth investigating. Perhaps so. I am more convinced it could be worthwhile using the rail corridors in cities for roads, but in Wellington and Auckland too much money has been poured into passenger rail for this to be worth considering for now.
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Meanwhile, Keith Ng in the NZ Herald has a column called "Just the Facts" where this week he challenges Richard Prebble's assertion that "it was a myth to say rail was environmentally friendly if the production of rail, locomotives and the need for trucks to take goods to destination were counted". He claims an EECA study is the most authoritative, because it claims the energy intensity of road vs rail is a factor of around 5 to 1. What he doesn't say is the basis for this comparison, because the factors vary wildly. For example, a truckload of freight from Wellington to Petone by rail will burn a lot more fuel per tonne km, than a trainload consigned from Wellington to Auckland.
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but then he goes to Chris Kissling of Lincoln University. Yes, the same one I fisked a month ago for advocating bullet trains in NZ, "smart clothes" that automatically open doors and "steer people around hazardous places" and that the future of flying is that passengers will be drugged and stacked horizontally on beds! Kissling presumably supplies him with a European study about environmental costs, which makes rail look good, failing to point out to Keith the most recent comprehensive New Zealand study directing comparing rail and road freight environment costs -
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I've quoted it before, the Ministry of Transport's Surface Transport Costs and Charges study.
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I've quoted it before, the Ministry of Transport's Surface Transport Costs and Charges study.
It contradicts what Chris Kissling and Keith Ng says, showing that Keith isn't showing "just the facts", since he ignored one of the most authoritative studies. What did it say? Well it compared the environmental impacts of freight between Wellington and Auckland, Napier and Gisborne and Kinleith and Tauranga. The comparison is as follows:
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Environmental costs per net tonne km in NZ$
Wellington-Auckland rail NZ$0.008, road NZ$0.006
Napier-Gisborne rail NZ$0.002, road NZ$0.002
Kinleith-Tauranga rail NZ$0.001, road NZ$0.004
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So in other words, on average it is more environmentally friendly to send freight by road between Wellington and Auckland than by rail, but the opposite between Kinleith and Tauranga. In which case, Richard Prebble is pretty much right.