Intersection Rules -

Only the following intersections are acceptable:

1.

n-way clear,

2.

n-way light,

3.

n-way stop, and

4.

(n-2)-way stop.

In order to perform multi-segment analysis at an intersection, data must be available for at least two of the segments entering the intersection. We only used the intersection rules to reject suspicious data in the work reported here. However, they can also correct control identification errors, if data for all or most of the segments is available.