## Help me understand the concept of "85th Percentile."

I am part of a group working on a policy document for the mitigation of traffic issues (e.g. speeding). Stakeholders are having a hard time with a particular criteria which reads as follows: "85th percentile speed is in excess of the signed speed limit by 5 mph or more."
posted by M.C. Lo-Carb! on Nov 26, 2014 - 22 answers

## Looking for an online traffic counter I can query with curl

I am searching for a live traffic flow counter which is on the net and reachable by http, or some webpage that displays hourly or cumulative vehicle statistics.
posted by thewalrus on Oct 28, 2014 - 4 answers

## How to model the accident rate on a certain stretch of road

How could I approach modeling the number of accidents on a certain stretch of road? I've got some semi-ecological approaches in mind but no idea if they're workable. Are there standard approaches to this sort of problem?
posted by col_pogo on May 7, 2012 - 9 answers

Where can I find information about the rates of automobile traffic (per minutes/day/month) per address or intersection?
posted by digdan on Mar 9, 2012 - 2 answers

## That's not a blue moon; pull over...

Can anyone point me to actual data on how often motorists receive traffic tickets? I'm looking for where the top of the bell curve is, so to speak - obviously, individuals vary widely, which is kind of the point of my question - how often does the "median" driver receive traffic tickets?
posted by randomkeystrike on Mar 1, 2012 - 12 answers

## Where's my traffic singularity?

If I wanted to extrapolate how many years it's going to take before traffic fatalities were reduced to a statistically insignificant occurrence, how would I do that? I would use the data from the Fatality Analysis Reporting System.
posted by bigmusic on Jan 11, 2008 - 14 answers

## Tracking referrer links and traffic to livejournal?

What are the best ways to track referrer links & to track traffic to a Livejournal account or community?
posted by tastybrains on Apr 19, 2006 - 1 answer

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