This is a recently released animation of 24 hours of traffic in Los Angeles. It’s constructed from reports sent from the smartphones of Waze users. Waze is a “social mobile application providing free turn-by-turn navigation based on the live conditions on the road and driven by users”.
It starts at 4pm but really goes beserk the next day in the AM peak. As far as I can work out, red dots are concentrations of high congestion and green dots are hazards reported by Waze users.
The CEO of the Committee for Melbourne, Andrew Mcleod, advanced an interesting argument about the importance of growth when launching the Committee’s new report, Melbourne Beyond 5 Million, earlier this month.
He contended that Melbourne can get better as it gets bigger. His main argument is that Melbourne in 2010, with 4 million people, is double the size it was in 1960 and is, he says, unambiguously more liveable.
So is bigger better? I don’t think I have a definitive answer and I’m not even sure there is one, but I think it’s useful in light of the high population growth projected for Melbourne to canvass some of the issues.
The fear many people have is that a bigger Melbourne will mean housing is less affordable and roads and public transport more congested. Some people also think it would be less safe, less equal and have a much larger per capita ecological footprint.
But there are advantages in getting bigger. Larger cities are usually denser and have a lower ecological footprint than smaller cities. There is also an extensive literature showing that the productivity of cities increases with population.
There are different opinions on the underlying reasons but many observers, like Harvard’s Professor Edward Glaeser, think that big cities enable people to connect and learn from one another. They tend to be more diverse and offer greater specialisation in work, consumption, socialising and ideas.
There are more than thirty cities in the OECD countries alone that have a larger population than Melbourne. They must be doing something right if people want to live in them. For all the complaints made about Los Angeles, many more people seem to want to live there than in Melbourne. Many talented Australians aspire to move to LA to work in specialised industries like entertainment, higher education and technology. Read the rest of this entry »
Deirdre Macken makes the point in today’s AFR (gated) that a large proportion of Australia’s population is located in a very small number of primate cities, unlike the US where there are very many smaller cities.
She argues that if you want an urban lifestyle in Australia you either live in a large capital city or you camp out, whereas in the US you are spoilt for choice. Instead of making our capital cities larger, she asks, why don’t we build up our smaller cities?
Good question and if I weren’t about to go to the Zombie Shuffle I might well have something to say about it. Perhaps another day.
However for the moment let me just respond to her claim that “if Sydney were transported to the US, it would rank as the second-biggest city after New York. If Melbourne were transported to the US, it too would be the second biggest city, just pipping Los Angeles’s 3.8 million”.
A mere 3.8 million people in LA? I’ve got a lot of sympathy for journalists but this seems a bit too obvious. Perhaps Deirdre doesn’t do much travelling. She’s also got form when it comes to playing fast and loose with the numbers.
Sydney’s population is currently around 4.5 million and Melbourne’s is 4.0 million. Los Angeles had a population in 2009 of 12.9 million. In fact there are ten US cities that are larger than Sydney and fourteen larger than Melbourne (see here and here). Read the rest of this entry »
The latest edition of the Transportation Energy Data Book: Edition 28 was released last year by the US Department of Energy (Office of Energy Efficiency and Renewable Energy).
I’ve derived the accompanying graph from Chapter 2 of the report. There are a couple of points of interest here.
In particular, the data shows that load factors are very important. Although public transport is more energy efficient than cars when it is fully loaded, it has to operate at off-peak times and on secondary routes, when patronage is low. Read the rest of this entry »