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Location: Trzech Wieszczów Avenue, Cracow, Poland

Arterial map of Trzech Wieszczow Avenue, Cracow, Poland

Number of intersections: 12

This case study is an example of Green Traffic Software tool applied to a real urban city arterial. Here we are dealing with a western and north-western part of Aleje Trzech Wieszczów (Cracow Ring Road II), consisting of Aleja Z. Krasińskiego, Aleja A. Mickiewicza and Aleja J. Słowackiego. It is 2760 m long and contains 12 intersections, only 3 of them having left turns.

For the given set of phase splits in all arterial intersections, GTS provides multiple coordination schemes.

Maps data: Google, © 2023

Input arterial data:

  Number of traffic lights

  Distances between them


  Recommended vehicle velocity


  Split phasing


  Cycle lengths and the desired   common cycle length

Arterial input data

Data source: Florek K. (2020) “Arterial Signal Coordination for General and Public Transport Vehicles Using Dedicated Lanes”, J.Transp. Eng., Part A: Systems, 2020, 146(7).

Arterial portrait


GTS provides the arterial portrait, showing all possible bidirectional timing plans with 1 sec resolution. In total, 1317 timing plans are possible, 46 of them provide the maximal sum bandwidth of 52 seconds.

Each green asterisk leads to a particular timing plan: offsets and phase sequences ("orders") are shown together with the time-space diagram. The dark green asterisks mark the bandwidths pairs with maximal sum. The blue circles mark the bandwidth pairs that are impossible in this arterial.

Three arterial timing plans below correspond to the bandwidth pairs marked by green squares in AP.

The inbound direction in the diagrams is top-down, the outbound one is the opposite.

Inbound and outbound bandwidths are indicated in green and blue, correspondingly.

Inbound bandwidth: 36 seconds

Outbound bandwidth: 16 seconds


Inbound bandwidth: 26 seconds

Outbound bandwidth: 26 seconds


Inbound bandwidth: 15 seconds

Outbound bandwidth: 37 seconds

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