Without the hints on the original graphs, can you spot when the mandatory helmet law was introduced? Answers in ticks from the left on a postcard without cheating and looking up the originals.
Thought it would make a good challenge for the Swampmonster to ask her to point it out if the opportunity ever arose.
Yup. Been there, done that. The really striking thing is that the Australian weareing rate apparnetly went from around 30% to around 80% in the three years up to and including compulsion. Can you see any justification for 90%, 88%, 85% or 69% efficacy in that chart?
Yup. Been there, done that. The really striking thing is that the Australian weareing rate apparnetly went from around 30% to around 80% in the three years up to and including compulsion. Can you see any justification for 90%, 88%, 85% or 69% efficacy in that chart?
Without the hints on the original graphs, can you spot when the mandatory helmet law was introduced? Answers in ticks from the left on a postcard without cheating and looking up the originals.
Here's a spoiler for the australian graph showing the percentage of crashes that result in a head-injury:
Obviously those are Cook & Sheikh helmets they are wearing - the cycle helmets have protected the pedestrians very well indeed!
I think, in dedication to their cause, C&S should wear enough helmets to protect all of us. After all their first priority is safety and they can be far more certain that people will be safe that way than trust to the vagaries of whether individual do or don't wear helmets. ;-0
