CityCyclingEdinburgh Forum » Debate!

Soderberg numbers and relative car use

(161 posts)

  1. Darkerside
    Member

    Ta for rule clarification.

    And I'd have thought that the statement that the day doesn't change until you sleep went as read. In my first year at uni this often resulted in Wednesday running straight into Friday due to an overnight Tesco shift.

    This was not sensible. Obviously.

    [Admin edit: rescued from spamtrap.]

    Posted 4 years ago #
  2. Frenchy
    Member

    Always good to learn that I'm not the only weirdo still keeping a spreadsheet of my journeys.

    Looks like my numbers will end up around 3.4 and 4.0. This is a fairly significant improvement on 2018's 2.40 and 2.73.

    Also looks like, for the first time ever, I will have travelled further by bicycle this year than all motorised modes of transport combined.

    Posted 4 years ago #
  3. Arellcat
    Moderator

    I'm quite curious to see how our spreadsheets compare, and whether they give an insight into our thinking.

    Posted 4 years ago #
  4. sallyhinch
    Member

    Having had a very elaborate spreadsheet for keeping track of my Eddington number, which died when I dropped my laptop (this was before I signed up to Dropbox which, of course, I did immediately after my laptop was restored, such is the nature of post horse-loss stable-door bolting), I went for a very minimalist approach which simply records for any given day and for any given member of the household whether zero or at least one journey was taken by bike, car, or motorised transport.

    Posted 4 years ago #
  5. Arellcat
    Moderator

    I may have overthought this.

    Mind you, I now have a record of every mode of transport I've used every day this year.

    Posted 4 years ago #
  6. sallyhinch
    Member

    Ooh, colour coded too

    Posted 4 years ago #
  7. sallyhinch
    Member

    Right well Christmas was not kind to the numbers so here's the final tally:

    Me: 2.34/1.99
    Household: 0.41/0.35

    I rode a bike 239 days this year in total, went in a car 102 days and took some form of motorised transport 120 days. There were also quite a few days (mostly Sundays) when I took no form of transport at all (going out for a walk from the house doesn't count)

    Posted 4 years ago #
  8. Arellcat
    Moderator

    I finished up with Sodn small = 1.52 and Sodn large = 4.69. Here's how the year went:

    I cycled on 210 days this year, and walked on 27 days. I drove a car, or was a passenger in a car, on 48 days, and I rode my motorbike on 88 days. I used a train/tram on 13 days this year and a bus on 9 days. On 40 days in 2019, I either didn't travel at all or made only a very minor walking journey.

    Posted 4 years ago #
  9. urchaidh
    Member

    For 2019 I ended up with 3.7 (6.8).
    (Google Sheets Graph Thing)

    Posted 4 years ago #
  10. sallyhinch
    Member

    So this was probably a really bad year to think 'I'll not bother keeping calculating my Soderberg number as it's unlikely to change ...' I've probably used my bike less than normal but the car has just had its first outing this week

    Posted 4 years ago #
  11. Arellcat
    Moderator

    My Soderberg stats are doing quite well. Sodn small = 2.65 and Sodn large = 5.75. Sodn large was actually infinite for the first couple of weeks of the year.

    Today is day 132. and lock down began on day 78. To date I've cycled on 59 days, walked on 13 days, ridden my motorbike on 11 days, and used the bus or train only on 3 days. On 32 days this year I didn't leave the house, which gives me an idea for more data visualisation, but that's for another day.

    Posted 3 years ago #
  12. sallyhinch
    Member

    I'm cycling much, much less. Maybe twice a week instead of 5-6 times. It turns out I really do just use my bike for transport unless the other half is up for an occasional spin. Meanwhile the car is going out 1-2 times a week (once for the weekly shop, plus picking up heatlogs occasionally) and we walk every day, but not for transport.

    Really annoying that I can't put a number on it because I got behind with the spreadsheet in February and decided it wasn't worth the bother

    Posted 3 years ago #
  13. urchaidh
    Member

    I didn't bother tracking this year and am now regretting it. My car hasn't moved in two months and I haven't been on a bus or train for longer, but I think the bike has been out pretty much every day. Numbers would be good.

    Posted 3 years ago #
  14. Frenchy
    Member

    I didn't travel anywhere by car or public transport in May, so my Soderberg number for the month was undefined.

    I'm fairly confident that has never happened before in my life.

    Posted 3 years ago #
  15. Arellcat
    Moderator

    I didn't travel anywhere by motorised means in April, which like Frenchy's May is quite remarkable.

    I did have cause to use my motorbike a couple of times in May to deliver PPE components. My altruism was short-lived because while homewardbound the bike quietly deposited its chain on the Sherrifhall roundabout, and then my phone mysteriously lost all battery charge and wouldn't charge from the bike, all of which necessitated a panoply of swear words, followed by a Soderberg-busting car rescue journey and an extremely late night because the tow truck had to come from Glasgow, because the local tow truck had broken down. The motorbike has sat unmended in the naughty corner of the garage since then and I am not minded to do anything about it.

    I am currently at Sodn small = 3.04 and Sodn large = 6.31, which is pretty amazing for me.

    Posted 3 years ago #
  16. sallyhinch
    Member

    I've been in the car once since the 22nd March - had to be picked up after the Brompton punctured. We then took it for an extended loop to charge the battery properly.

    Posted 3 years ago #
  17. neddie
    Member

    I haven't driven or been driven since before the start of lockdown, except...

    I moved the car two spaces down the road, to avoid being parked under a tree! Does that count?

    Posted 3 years ago #
  18. I were right about that saddle
    Member

    I think I'll take the battery out of the IWARTSmobile for a good charge later on today. It has been to the shops once a week since the beginning of the Strangeness.

    Posted 3 years ago #
  19. Arellcat
    Moderator

    I finished up 2020 with Sodn small = 5.27 and Sodn large = 11.37, which is pretty wild. Here's how the year went:

    I cycled on 187 days in 2020 – rather less than in 2019, as was my mileage – but I walked on 44 days, which is noticeably more than I did in 2019. I actively travelled on 216 days altogether, though, which was just a fraction less than 2019.

    I was a passenger in a car on just 19 days, and I rode my motorbike on only 19 other days. I used a train/tram on only 2 days and a bus on 3 days. On 91 days in 2020, I didn't travel anywhere at all, because reasons.

    Posted 3 years ago #
  20. gembo
    Member

    Excellent numbers @arellcat

    Posted 3 years ago #
  21. I were right about that saddle
    Member

    So many numbers.

    Posted 3 years ago #
  22. Frenchy
    Member

    137 days cycled.
    13 other active days*.
    50 days of car use.
    8 other days of motor vehicles.

    All of these are considerably lower than 2019.

    Big Soderberg = 3.08
    Wee Soderberg = 2.66

    Which are actually down on last year. Car mileage was only slightly lower than 2019 - far fewer short journeys but not much difference in long journeys.

    *Walked to work a few times due to weather or punctures, a couple of runs and a few days clearing the pavements of the street when it was snowy. I don't count walking the dogs.

    Posted 3 years ago #
  23. gembo
    Member

    @dr French you using the Napier Log calculations? @arellcat has higher soderberg than you but fewer days in the motor?

    Posted 3 years ago #
  24. Arellcat
    Moderator

    The problem* with the Soderberg methodology, as Hankchief pointed out in the original thread, is that it becomes increasingly sensitive to the car element, as you notch up more active travel journeys. One day in a car can require several days walking or cycling to compensate. That's why if I couldn't avoid being in a car, I often tried to get out for a walk or a bike ride in the same day. I don't own a car, and what with lockdown and exploring locally and summer and stuff, I had no particular inclination to ride my motorbike.

    * incentive

    Posted 3 years ago #
  25. fimm
    Member

    Yes, I wish I'd kept records last year...
    I travelled by car once in December (on Christmas Day) and not at all in November. We did get a few trips away over the summer but I suspect I could work out exactly how many days I have been in a car since March if I really wanted to.
    (The last time I drove a significant distance without a passenger was July 2019.)

    I have been in a train once since March, and buses on two different days.

    Strava would tell me how many days I've ridden a bike - but of course that was mostly exercise, not transport.

    Posted 3 years ago #
  26. HankChief
    Member

    Great work by those recording their stats and getting great numbers.

    With a huge potential for threaddrift, I'm pondering a new metric but need your help in naming it...

    Number of days you wore shorts or skirts above the knee / Number of days you wore trousers or lower leg coverings.

    My 2020 saw me rack up a score of 3 as the trousers went in the cupboard in mid March when I stopped going into the office and only came back out mid Decemeber when I finally admitted defeat.

    Any one top that?

    Posted 3 years ago #
  27. Arellcat
    Moderator

    Strava would tell me how many days I've ridden a bike - but of course that was mostly exercise, not transport.

    Your Soderberg numbers ought to be pretty high, no?

    Hankchief's methodology didn't particularly differentiate between cycling as utility/car replacement, and cycling as exercise/fun. I had many days last summer when I went investigating things I'd seen on a map; I could have used $infernalcombustionvehicle to get there but chose not to because the attraction of sunlight and the fun of getting there was important. No point zooming off into the middle of nowhere, dressed head to toe in black leather and MX boots, rambling up and down for maybe half an hour, overheating in the process, and then zooming home again.

    Posted 3 years ago #
  28. wingpig
    Member

    @HankChief I'd forgotten about having been in the office and having had to wear long trousers up until March. Perhaps have voluntary and mandatory variants of the number? Which would ¾ shorts count as? I usually have my knees covered by ¾ shorts but make up for it by only wearing trainer socks and exposing my ankles except when I'm wearing walking boots at the allotment.

    Posted 3 years ago #
  29. acsimpson
    Member

    I'm a warm weather short wearer but I have a friend who I met while out walking yesterday who is still wearing shorts. His son was too up until their first sledging outing at which point he changed his mind.

    Posted 3 years ago #
  30. Arellcat
    Moderator

    I finished up 2021 with Sodn small = 6.94 and Sodn large = 16.86. Both were infinite until mid-May, when I was necessarily a passenger in a car to get to Bathgate for my first vaccination. For jags two and three I cycled.

    Through the year I cycled on 210 days (I did a month's worth of bike trips more than 2020) but I walked on 32 days, which was actually 12 days less than in 2020. I actively travelled on 236 days altogether, up 20 from 2020.

    In 2020 I was a passenger or the driver of a car on just 19 days; in 2021 I reduced this to 14 days. Six of those days were in order to have an actual going-away-holiday; of those six days, three were also spent cycling and then putting the bike on the car. Total car distance was 1098km (of which 900km was the holiday).

    I rode my motorbike on 19 days, which barely justifies the cost of keeping it.

    As for public transport, I cannot hold any high ground, no doubt to Morningsider's consternation (and my own). With the York Rally cancelled for a second year in a row, and no work meetings in exciting faraway cities, and indeed having The Fear when the world is still all covidy, for 2021 I reduced my public transport trips to a single journey, when I caught the train home from Tweedbank, having cycled the long way to get there.

    I haven't been keeping records of my Patella Number*, but it will be rather small because I feel the cold a lot, and often wear lycra tights or leg warmers over my bike shorts.

    * whose name I have just invented

    Posted 2 years ago #

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