THAFUZZ said:
Reli said:
THAFUZZ said:
That said, I have the documentation to prove My visual estimation accuracy within 1-2 miles per hour.
I find that rather hard to believe. Are we talking pure visual estimates, or were they assisted by using the elapsed time between 2 road markers/objects? And what kind of roads and speed ranges are we talking about here? Highways with a lot of room to judge distance, or residential areas? Busy traffic, or a solo vehicle? And how many observations were included to calculate that 1-2 mph average?
Really? 4Hrs of Visual estimation. Tested on real world commercial thoroughfare, residential AND on closed courses to show differences. Keep this in mind Reli, CHP helicopters spotter's visual estimations from the air of a violator IS admissible in court as well. There are roadside markers that can be used in a specific equation to verify a vehicle's speed that is admissable in court. A patrol unit can issue a traffic citaion for the Air ship simply by adding the Ofcr's (Spotter's) name and badge onto the citation. I've done it for once for one of the Dept's Air ships. That Ofcr had to go to court, I was simply the stopping unit. Our class's Visual Estimation passing score was 3-5 mph degree of accuracy. Mine was 1-2 mph and, signed off by Instructors who can be called upon to support their training Certs. Again, it all boils down to Experience. Visual estimations are to be used to identify a Target Vehicle first, Radar is then used to confirm an Officer's estimation. You can doubt, but I know.
When you were being tested, did someone have a radar/laser gun, giving you feedback after each estimate? Or did you actually write down all your estimates and hand them in without ever knowing how good you did?
Also, what happens later, after the test? Would the accuracy remain? Do you feel confident that you could wake up one day, drive to an empty stretch of road you've NEVER been to before, park, and wait for the FIRST car to go by, and accurately judge it within 1-2 mph? Even if it was going super-legal speeds?
As for the bit about CHP helicopters, I would actually trust their judgement over a patrol unit, because they're hovering up above, looking at reference markers, and maybe using a stopwatch for all I know.
I'm sure estimates are pretty good if the guy's been sitting on the side of the road for awhile, comparing one car to another, and getting familiar with the road noise etc.........But what about when he's unprepared, like when he's rolling out of Burger King, and sees a speeder shoot by......How accurate is a rushed, unprepared estimate like that going to be?
Hope I am not offending you, I am just a very skeptical person