All right. The Preusser Research Group site appears to be down. Maybe being overwhelmed by other bikers checking out the article stats. I did a google search and found the +50% and +100% Kentucky/Louisiana article over
here.
The +50% increase in fatalities in Kentucky in actual hard numbers went from 24 in 96 and 97 (repeal) to 27 in 98, then 40, then down to 36 killed riders in 2000 (including pillions).
The +100% increase in Louisiana in actual hard numbers went from 19 in in 97, to 34 in 98 (repeal), to 40 in 99, 57 in 00 and down to 54 in 01.
The article also compares with Texas and Arkansas stats.
Texas had a 37% increase in actual hard numbers went from 124 in 95, 110 in 96 (repeal), 112 in 97, 147 in 98 and 174 in 99.
Arkansas had a 29% increase in actual hard numbers went from 14 in 95, 24 in 96 (repeal), 18 in 97, 28 in 98 and 21 in 99.
It goes on to say that motorcycle fatalities in the US increased by 50.3%, registrations increased by 12%, and number of miles driven increased by 5.6%.
What I prefer to see is that Kentucky motorcyclists killed per 10,000 averaged 6.4 in the two years prior to repeal and 8.8 in the two years following. Louisiana's rate per 10,000 was 4.5 averaged in the two years prior and 7.9 in the following two years.
Kentucky had 36,603 registered riders in 96 and 44,003 in 2000. 8 additional motorcycle deaths with 8,000 additional rregistered bikes.
Louisiana had 60,042 registered riders in 96 and 72,445 in 2000. 28 more deaths and 12,000 more registered bikes.
I'd like to see the report for Florida too. Not being a stats guy, can 8 additional deaths with 8,000 new bikes be statistically significant? Remember, the deaths include pillions. With 8,000 more bikes, how many have pillions? Even if half (a pretty high number), that's 8 deaths for 12,000 riders.
They're comparing registered bikes (1.0) vs motorcycle deaths (1.5? 1.4?), a number that includes pillions.
Oh, and at the beginning, the number of helmetless riders vs helmetted riders was an observational count. Someone or a group of someones hung out at bike shops, bars, or even street corners and counted heads. Again, we don't have the hard numbers, time of year, weather. Certainly there'd be more helmets and less riders in inclement weather. Hanging around Daytona Beach in Fl will certainly see a higher number of helmetless heads vs dual sporting or touring.
Carl