human909 wrote:"Expert evidence from the police for the prosecution was that Alliston had been going at 18mph (8 m/s) and that his braking distance was 12 metres. From experiments on other bicycles, including a police mountain bike, it was alleged that with a front brake he would have been able to stop in 3 metres"
This is plainly impossible as has been described in this thread and independently elsewhere.
Well that's another interesting aspect to the case. Initially they wanted to represent Alliston as being as reckless as possible, so they used the "upper end" estimate of the speed he could have been travelling to present to the jury.
Later however when they did the stopping distance tests they wanted to prove that he could have stopped easily if he was on a police mountain bike. But to make this more convincing they needed a lower speed so as to get the shortest stopping distance possible. So suddenly they changed their story on his speed to about 12 MPH when she stepped out onto the roadway. Hence they did the stopping tests at a slower speed.
The police and the prosecution have a duty not to produce false or misleading evidence. In fact knowingly doing so can have significant professional ramifications.
Yet some of the evidence is PLAINLY false. So either they are ignorant/incompetent or worse.
Yes, some false evidence on that police stopping distance test has now been confirmed on another site (will try to find a link later). Anyway, you know how I posted a link to the police video earlier in this thread, and mentioned that in the mountain bike stopping test that he appears to start slowing well before the actual cones (marking the stopping zone). Well a guy on another site has done a frame by frame analysis of that video, and looked at the position of the wheel reflectors at 4 frame intervals to infer the wheel rotation and distance travelled. As we suspected the wheel turned further (about 2/3 of a rev) at the 4 frames taken back near where the speed was measured, and only about 1/2 a turn in the 4 frames prior to him hitting the stopping zone! in other words, proof that they fudged that test!