Quote:
Originally Posted by Moses
From wisegeek.com;
"The minimum sample cannot be less than 100 vehicles. After the sample is taken, the speed that 85% of the vehicles are traveling at or below will be the proper speed limit for that particular road. The vehicles traveling above that speed can be singled out and ticketed."
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I doubt that any speed limits are actually lowered using that process. Show me a road where the 85th percentile of the speed distribution of free-flowing traffic is lower than the speed limit. I'd guess that number is about 80 mph on most California freeways - the 15th percentile may be at the speed limit.
/ J