1. dancarins said:

    Brilliant work, Tom.

    12th September 2013
    • Tom Chance said:

      Thanks, it would be good if similar data were released for other cities like Manchester and Birmingham so people there could do the same analysis.

      13th September 2013
  2. This is a very nice piece of work. For the past couple of years I’ve tried to demonstrate that OSM could be used for analytical purposes. In this case you have actually tried to use it for a genuine analysis project, and the absence of complete and comprehensive data hinders this. We probably only need to be 80-90% complete but coverage does need to be comprehensive.

    It’s interesting that you cite problems with non-deduping of NaPTAN stops in OSM: for most purposes (routing, finding the nearest bus stop, setting proximity alarms so as not to miss an unfamiliar stop) the data is ‘good enough’. Trying to use data for analysis places a different kind of bar with respect to quality and highlights areas we need to work on. It is therefore not just useful in its own right, but should be another driver for improving the map.

    Lastly, you could use FHRS Open Data to source cafes/restaurants or pubs/bars. In the latter case coverage is not complete (not all pubs serve food), but is pretty comprehensive (most London Boroughs participate in the scheme).

    13th September 2013
  3. Jan Eek said:

    We actually do it here in my city, Bergen, Norway, and the measuring results are NOT good.
    Especially under a special weather condition, people with asthma, kols, heart condition or reduced immune system are adviced to stay inside in several places in the city.

    Beside being a member of the Green party, I am also member of a local party that focuses only on the airpollution. We managed to get one of us into the City Counsil and that has given some results.

    The cars are of course the worst polluter, BUT, we are a port city sourrounded by seven mountains, so we have the ships. There is a lot of traffic in that narrow port; supportship for the oil business, fastgoing vessels for transporting people along the coast, and then we have the cruise ships. We are one of the busiest port for cruise ships in Europe (“The gate way to the fjords”) and this year we had/have 260 visits from cruise ships.

    So, we are fighting a war on two fronts: The cars, but not least, the pollution from the ships. Until we brought it up, nobody was even thinking of the pollution from the ships. Without going into too much detail on the chemistry, the toxic fumes from the huge diesel engines from the ships are polluting much more than the cars. And the particles are so small that you can’t see them and they are more dangerous.

    The University hospital in Bergen made an assessment in 2009, and conluded that at least 143 people died “too early” because of the pollution. It really is a serious problem and the UK of course have their full share of ports.

    The solution is so simple: Electricity from land. Many cities in Europe have established that and we have had a hard fight for two years with the Counsil, and now, finally, we are going to set up a “plant” with the proper equipment to supply ships with electricity to ships.

    We are far away from covering the whole port, but it is a start and when the cost/benefit analysis we have presented finally gets through, things may speed up.

    So, the cars……The mountains are of course a problem, BUT, it is also a blessing. TUNNELS! So, now, finally, there are concrete plans to make long tunnels to keep the cars, well, as many as possible, out of the city centre.

    So, things are going the right way, but it will take time……

    13th September 2013
  4. There are 7 million of us living in here. And the roads are clogged up because people are driving cars on their own. At the end of the day that means that some people are going for a spin with an empty sofa (the cars back seats) and an arm chare (the passenger seat).

    The most popular car in the UK at the moment is the Ford fiesta, it weighs1.6 Tons. Let’s assume that the Fiesta is about average size for cars in the UK. That means every time you “pop out” in the car, that’s 1.6 tons of metal you decide to cart about.

    That is the equivalent of 538 red bricks. Think about what an effort it would be to drag that much weight to the shops on foot, every time you want to get some milk, or go to the cinema. You wouldn’t do it. It would be a profligate waste of energy. It is a profligate waist of energy.

    At some point we are going to have to just accept that, the parties over. We can’t keep needlessly wasting energy like this.

    Nisan has come up with the Leaf. But is that really the answer? It is still massive. It is still a machine for moving Goods and Passengers. What we need is personal transport to get us to work. Electric Vehicles could be perfect for Car Clubs. Short journeys were you need to move something heavy, but getting to work like this is simply mad.

    I would like to see regulation change to promote the use of small single person electric vehicles. Yep, I want to see lots of adults whizzing around on scooters and possibly some on skate boards. What a joyful thing that would be!

    Electric motors are small and powerful enough that these things can now do hundreds of miles on a charge and move at 20mph going uphill. You can fold them up and take them on the train. And they fit comfortably in any small house. They are there when you need them and they are much faster the current average speed of cars in cities.

    They are also so small that the batteries themselves don’t require too much land to be destroyed getting the minerals from and open cast mine.

    So why are they illegal in the UK?

    13th September 2013
  5. malenki said:

    Your writeup about combining the pollution data with maps is fascinating.

    The disturbing part for me was about the NAPTAN import.
    The importer should have taken care to avoid the problem of duplicates instead of obviously just dumping his data into OSM.

    @ Alexander Baines-Buffery:
    Vehicles powerd by electricity small enough to fold and light enough to carry into a train don’t go “hundreds of miles”.
    I assume you talk about pedelecs
    The average e-bike weighs minimum 25 kilogram and can go about 50 km before its battery is exhausted.¹ Then you have a nice training effect by having to pedal the extraweight. :)

    ¹ http://en.wikipedia.org/wiki/Pedelec#Range

    29th September 2013
    • Tom Chance said:

      The NAPTAN import was one of the first large-scale imports, one of a few which led the community to realise issues like duplicates needed a bit more attention. Somebody did create a tool to try and help people weed them out after the import, but as I said this has never been done very comprehensively.


      30th September 2013

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