Modeling Traffic Function Reliability of Signalized Intersections with Control Delay

Table 1

Definition of the variables.

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: delay formula

: probability distribution function

: the overflow queue at the beginning of cycle

: the arrival rate (veh/s)

: the saturation flow rate (veh/s)

: the green time and the red time during cycle (s)

: green time ratio

: the average delay for vehicles during cycle (s)

: cycle length (s)

: reliability of signalized intersections

: the probability that indicator attains to the level of traffic function requirements at signalized intersections

: base value of the delay threshold (s)

: adjustment coefficient of delay threshold

: delay threshold (s)

: area of

: the green time when arrival curve and departure curve intersect

: ratio of traffic volume to capacity

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