Note: I haven't followed the link and read the report in detail yet, (just got the press release) but wanted to share this with all y'all.
the Governors Highway Safety Association released a report on “Motorcyclists’ Attitudes on Using High-Visibility Gear to Improve Conspicuity.” Needless to say, the conclusions listed below by this taxpayer-funded study can be filed under the category of obvious and predictable.
Eighteen focus groups with 137 motorcycle riders in California, Maryland, Michigan, and Texas were conducted to explore motorcyclists’ attitudes toward wearing high-visibility gear to increase conspicuity. In most groups, only one or two participants said they regularly wear high visibility gear.
Based on the focus group discussions, several factors emerged as barriers to motorcyclists’ use of high-visibility gear. The most important involves the appearance of the high-visibility gear. It is judged as unappealing by some riders, and many riders are concerned that the look or style of the gear does not fit in with their riding culture. These factors work against the acceptance of high-visibility gear, even though many riders believe such gear may be effective for increasing conspicuity. Many participants thought that motorcycle-riding culture would have to change for riders to adopt high-visibility gear, due to the association of novice riders and older riders with high-visibility gear.
Another barrier to the use of high-visibility gear is riders’ skepticism that high-visibility apparel provides enough of a safety benefit to warrant its use and cost. Evidence that demonstrates the safety benefits of high-visibility gear is important to convincing motorcyclists they would personally benefit from using it.
In addition to adverse feelings about high-visibility gear itself, many participants expressed the belief that high-visibility gear would not improve safety, largely because of the perception that motorists are distracted anyway. In fact, several participants suggested that the onus should be on drivers to look for motorcyclists.
If you are interested, you can find the full 81-page report by clicking HERE
So, average group size of 7.6 riders, and "one or two" in "most" groups routinely wear hi-viz...thats likely in excess of 10% of the participants, and likely more, percentage-wise.