We were talking on another thread about gps, so I had this idea to run just as an experiment. I have (3) Garmin Forerunner 201's, so I took them all for a ride. It was rush hour, and I was on my way home from an errand. The readings in the photos are all consecutive, without resetting. It was slow backroads, onto a congested highway, which finally opened up gradually just enough to get a couple spurts just over the last reading. The units were on my dashboard and I couldn't see the readout, so I watched the spedometer and when I topped out over the previous reading I was abruptly in traffic again at the next exit, that's when I pulled them down and took the pic. The readings were right on point with what I was seeing on my spedometer (2013 Nissan Frontier), and for each of the readings, my max speed was not held for more than a second or so, otherwise I would have rear ended somebody.
I was coming to my exit when I had an opening that I thought I could break 80mph(it's a 55mph speed limit
), but I noticed the SUV a ways behind me had a peculiar ammount of antennas on it
I slowed and changed lanes toward my exit and watched the unmarked state police vehicle cruise right by
The end result was that the greatest difference between the 3 units was .1mph, and it was not always on the same unit, it varied. I would like to do this again and watch them all to see if the numbers change approx the same, as I have no doubt it takes a certain ammount of time for a speed to register accurately, this is why I only really trust passes where I actually hold it wide open for a few seconds at least.
I am not claiming that this proves anything or whatever, or looking to spark any debate, just wanted to share the results an interesting experiment, you can draw your own conclusions if you desire.
20150519_151515_resized.jpg20150519_151612_resized.jpg20150519_152318_resized.jpg20150519_152837_resized.jpg20150519_153044_resized.jpg
I was coming to my exit when I had an opening that I thought I could break 80mph(it's a 55mph speed limit


I slowed and changed lanes toward my exit and watched the unmarked state police vehicle cruise right by

The end result was that the greatest difference between the 3 units was .1mph, and it was not always on the same unit, it varied. I would like to do this again and watch them all to see if the numbers change approx the same, as I have no doubt it takes a certain ammount of time for a speed to register accurately, this is why I only really trust passes where I actually hold it wide open for a few seconds at least.
I am not claiming that this proves anything or whatever, or looking to spark any debate, just wanted to share the results an interesting experiment, you can draw your own conclusions if you desire.
20150519_151515_resized.jpg20150519_151612_resized.jpg20150519_152318_resized.jpg20150519_152837_resized.jpg20150519_153044_resized.jpg
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