SUMMARY – visual salience and cognitive conspicuity have both been investigated as potential causes of collisions between cars and PTWs… the conspicuity theory is widely accepted at face value… but there is no compelling statistical evidence that shows a reduction in collisions resulting from ROWV at intersections… as the SMIDSY collision happens worldwide in hugely different driving regimes, the implication is that the crashes are a ‘human factors’ problem, NOT a conspicuity issue… ‘Think Bike’ campaigns have limited effectiveness… the most effective option is likely to be improving rider understanding of drivers’ visual perception issues and cognitive problems, helping the rider adopt a better defensive riding strategy at intersections… 

---

THIS PAGE HAS MOVED

IMPORTANT:

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.

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 https://www.flickr.com/photos/brizzlebornandbred/20001313491

SUMMARY – motorcyclists may believe that drivers don’t care about bikes or see them as a source of danger… they further believe the lack of empathy means they don’t look hard enough… this belief does not appear to be founded on any solid evidence, just speculation… gap acceptance studies show no right-of-way violations in thousands of passes… statistically, one study indicates that car drivers crash with other cars just as often as with motorcyclists and that they do not crash with motorcycles more often than motorcyclists with other motorcyclists… 

---

THIS PAGE HAS MOVED

IMPORTANT:

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.

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 https://www.flickr.com/photos/brizzlebornandbred/20001313491

SUMMARY – sometimes the driver sees the motorcycle but miscalculates ‘time to collision’… the rider may make it difficult for the driver to judge speed and distance by travelling faster than surrounding traffic… the size-arrival effect means smaller, nearer objects are incorrectly judged to arrive LATER than larger, more distant objects…  compared with cars and vans, the ‘time to arrival’ of motorcycles is estimated to be significantly later… riders exceeding speed limits are more likely to be killed in a collision…

---

THIS PAGE HAS MOVED

IMPORTANT:

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.

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 https://www.flickr.com/photos/brizzlebornandbred/20001313491