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Reply #8: Just keep in mind the 75th percentile rule. [View All]

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A HERETIC I AM Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Dec-06-05 05:15 PM
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8. Just keep in mind the 75th percentile rule.
That is the safest speed to travel, regardless of conditions and posted limits is that speed which 75% of traffic is traveling. If 75% of the traffic is traveling 90 in a 70 zone then the safest speed is 90. However, if 75% of traffic is traveling 40 in a 70 zone, then 40 is the safest.
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