Originally Posted by
Six jours
Between the fact that numerous people here critiqued your argument, and the fact that you ended your very first post of your recent return to this thread with a completely uncalled-for personal attack, that's just a really weird thing to have written.
Six jours, that was meant to be somewhat cynical but humorous pun of the comments you (plural use) have been using against those that feel bicycle helmets have value.
I-Like-To-Bike, you state, "I may or may not even read the rest of the post since you begin with more double helpings of prime baloney.
No reputable safety professional builds a risk analysis on the worst case potential injuries..." Ever done a
Process Safety Management (PSM) Process Hazard Analysis (this is a document download, so don't expect a URL to appear):
Factsheet #8
The Case for Worst-case Scenarios
Some companies consider only worst-credible scenarios rather than looking at the much more extreme worst-case scenarios. They argue that worst-case incidents are so improbable that they are virtual impossibilities. However, experience with numerous chemical industry disasters has shown that what was thought to be impossible happens all too often.
The Environmental Protection Agency requires many PSM-covered facilities to develop Risk Management Plans that include worst-case assessments of hazardous processes. These assessments must assume that all back-up safety systems have failed to work. Their examples include:
A transfer hose with no shutoffs fails, resulting in the release of the contents of the vessel or tank it is attached to;
Tank piping with no shutoffs fails, resulting in the total release of the tank contents;
A flame impingement on a vessel which results in the vessel’s failing; and
A severe vessel over-pressurization caused by contamination, a runaway reaction, or overheating which causes a venting to the atmosphere or a vessel failure.
We specifically have to make worst-case assessments, and these must be communicated to the community and emergency responders. So I don't know where you are getting your information, but it is not correct.
That is why I use worst-case scenarios in the assessment of a bicycle fall. It is only chance which determines whether there is a head impact during these mishaps, so that potential must be considered.
Mconlonx,
We share a lot of the same things, but you are asking me to do things that you should be doing for yourself. I have posted in the past many, many studies (ask Six jours), so if you want to see them, do a search on these threads of my name and take a look. Here is one I just uncovered:
CMAJ. 2012 Nov 20;184(17):E921-3. doi: 10.1503/cmaj.120988. Epub 2012 Oct 15.
Nonuse of bicycle helmets and risk of fatal head injury: a proportional mortality, case-control study.
Persaud N1, Coleman E, Zwolakowski D, Lauwers B, Cass D.
Author informationAbstract
BACKGROUND:
The effectiveness of helmets at preventing cycling fatalities, a leading cause of death among young adults worldwide, is controversial, and safety regulations for cycling vary by jurisdiction. We sought to determine whether nonuse of helmets is associated with an increased risk of fatal head injury.
METHODS:
We used a case-control design involving 129 fatalities using data from a coroner's review of cycling deaths in Ontario, Canada, between 2006 and 2010. We defined cases as cyclists who died as a result of head injuries; we defined controls as cyclists who died as a result of other injuries. The exposure variable was nonuse of a bicycle helmet.
RESULTS:
Not wearing a helmet while cycling was associated with an increased risk of dying as a result of sustaining a head injury (adjusted odds ratio [OR] 3.1, 95% confidence interval [CI] 1.3-7.3). We saw the same relationship when we excluded people younger than 18 years from the analysis (adjusted OR 3.5, 95% CI 1.4-8.5) and when we used a more stringent case definition (i.e., only a head injury with no other substantial injuries; adjusted OR 3.6, 95% CI 1.2-10.2).
INTERPRETATION:
Not wearing a helmet while cycling is associated with an increased risk of sustaining a fatal head injury. Policy changes and educational programs that increase the use of helmets while cycling may prevent deaths.
Nonuse of bicycle helmets and risk of fatal head injury... [CMAJ. 2012] - PubMed - NCBI
Concerning Hong Kong, we were in the New Territories, which is the Blue Line on the train at the University Station. It was near The Chinese University of Hong Kong, at the Hyatt Regency Hong Kong in Sha Tin. You apparently stayed in either the Hong Kong Island side, or Kowloon near the center of the city. There is much more to Hong Kong than those areas. Much of the newer areas have very well-built bicycling facilities. It pays to have relatives in the city to show you places most visitors do not see, and those are where the photos were taken.
John