https://www.nhtsa.gov/book/countermeasures-that-work/motorcycle-safety https://www.nhtsa.gov/book/countermeasures-that-work/motorcy... Here is some data from U

https://www.nhtsa.gov/book/countermeasures-that-work/motorcycle-safety https://www.nhtsa.gov/book/countermeasures-that-work/motorcy... Here is some data from USA, I've not read it.