From: nospam@nospam.invalid   
      
   In article <62d8555a-33c5-4dc0-8dce-31be829c0e91@googlegroups.com>,   
   Harry K  wrote:   
      
   > > *** As I once learned, the accepted margin of error for speedometers was   
   > > +/-   
   > > 3mph. Doing 61 in a 60 zone would be within that error.   
   >   
   > Most cops, IME, allow about a 10% variance, eg., posted 60, start writing   
   > tickets about 66.  We had a State Patrol speed emphasis campaign a few years   
   > agon on the same highway I referred to.  Posted in the paper was their   
   > announcement that tickets would start at 66.   
      
   a 10% buffer would mean 4 mph at 40 mph and 8 mph at 80 mph, which is   
   definitely not the case. the buffer gets smaller at higher speeds.   
      
   it's usually 5-10 mph, depending on the speed limit and other factors.   
   where the limit is 55, it is often a 10 mph buffer, but where it's 70   
   or higher, it's only a 5 mph buffer and on occasion, less.   
      
   > > 1.  that I close up to a 2second distance behind the lead to allow you to,   
   > > opportunity allowing, pass both of us at once?   
   >   
   > > *** No you keep the 2 second following distance it is my problem, it is   
   > > your   
   > > problem if you want to go faster and it is my problem if I expect you to   
   > > get  "pushed" closer.   
   >   
   > I don't get anywhere near a 2 second distance normally, fall back to at least   
   > a 10 second space.  Makes for a relaxed drive and a lot less tension.  2   
   > Seconds at 60mph is too close per most gurus anyhow.   
      
   in many areas, you can't maintain a 10 second space because one or more   
   cars will fill it if you even have the opportunity to try.   
      
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