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re: N.O. Camera ticket, 24 in a 20

Posted on 4/26/19 at 8:16 am to
Posted by Y.A. Tittle
Member since Sep 2003
101664 posts
Posted on 4/26/19 at 8:16 am to
How precise is your speedometer? Your foot?

There’s a few stretches around here I’ve learned to set to cruise on. It’s hard to do in a two block school zone.
Posted by Croozin2
Somewhere on the water
Member since Dec 2004
3192 posts
Posted on 4/26/19 at 8:22 am to
Dude, at 20mph, if your speedo is off even one mph, that’s generous. As you increase speed it may be further off but vehicle speedo calibrations are pretty damn close now.

Parting thought - go 20 in a school zone as posted.
Posted by tgrbaitn08
Member since Dec 2007
146214 posts
Posted on 4/26/19 at 8:23 am to
quote:

A speedometer is calibrated to read correctly with new tires of a certain circumference. As the tires wear, they get smaller by several inches. This changes the accuracy by about 2% which makes the speedometer show a higher speed that actual.
Posted by Hammertime
Will trade dowsing rod for titties
Member since Jan 2012
43030 posts
Posted on 4/26/19 at 8:49 am to
I believe manufacturers are allowed to let cars roll off of the lot with a 5% speedometer calibration. So, they can be going 21, and the speedo will read 20. It's not hard for people to miss the difference between 20 (really 21) and 21 (really 22.05)
Posted by ldts
Member since Aug 2015
2677 posts
Posted on 4/26/19 at 9:14 am to
quote:

There’s a few stretches around here I’ve learned to set to cruise on. It’s hard to do in a two block school zone.


I know the past few cars I've had, the cruise wouldn't work at 20 mph either. I think you had to be going at least 25-30 for cruise control to work.
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