# Traffic cones per motorway mile

1. Nov 9, 2008

### wolram

Is there some statistic that gives a ball park figure? And doe's any one knows why they are even there, time after time i see these cones but no activity.

2. Nov 9, 2008

### TVP45

It's possible you've come upon a breeding colony (They have to come from somewhere!). We have a number of nesting areas here in PA and, apparently by law, no one is permitted to disturb them by working within 2 miles. The sole exception is during rush hour.

3. Nov 9, 2008

### brewnog

The formula for required traffic cone density is given as follows:

F = (n * V^2) / IQ

Where F is the cone density (number required per kilometre), n the number of cars passing per hour, V the intended speed limit (in mph), and IQ the intelligence of the average driver for that area. You'll note a particularly high cone density on the M6 in areas around Cannock, Wolverhampton and Coventry because of the denominator of this equation.

4. Nov 9, 2008

### Hurkyl

Staff Emeritus
Don't worry, Winter's almost here... construction season is almost over.

5. Nov 9, 2008

### wolram

Has any one noticed, they never cone off the center carriageway?