Any portion of a signal cycle in which a red indication is observed by all approaches.

The portion of an intersection leg that is used by traffic approaching the intersection.

The maximum number of vehicles that can reasonably be expected to pass over a given roadway or section of roadway, in one direction, during a given time period and under the prevailing roadway, traffi [..]

Identical to the intergreen interval.

Identical to the all-red interval.

A complete sequence of signal indications. Each phase has been serviced and the cycle is beginning again.

The time required for one full cycle of signal indications, given in seconds.

The stopped time per vehicle (in seconds per vehicle), usually calculated separately for each lane group.

The rate, in vehicles per hour or passenger car units per hour, at which traffic is entering an intersection.

The length of the green interval and its change interval, given in seconds.