Don’t forget – start from the bottom! And still to come…

These pages are still in development.

Just added 17 April 2019 – each page now has a short summary at the top, which covers the main points set out in the rest of the text.

Coming soon – a brief explanation of what ‘science’ is, how it works, and whether we can trust the results.

Coming soon – some positive conclusions about how motorcyclists can prevent themselves being caught up in a ‘Two to Tangle’ collision with a driver at a junction.


Since you’re here, I’ve a small favour to ask. If you feel able to make a small donation to the upkeep and continued development of SOBS, why not buy me a coffee? Each contribution is much appreciated. Each cuppa keeps me awake and writing! Thank you.



The material is free to all to access and use under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. That means you can share it with your family and friends, and re-use it for club magazines and websites, so long as you acknowledge the source and author and include the same Creative Commons license in the derived works.

Please note, this Creative Commons license excludes commercial use. If you wish to use any of my work for commercial purposes, including (but not limited to) articles in pay-for magazines or commercial websites, please contact me.

Creative Commons statement

Kevin Williams has asserted his right under the Copyright, Designs and Patents Act, 1988, to be identified as the author of this work.

Photo credit Paul Townsend