Decision Making in Road Traffic Coordination Methods: A ...en-t.org/2020/presentation/pop.pdf · and Application (EnT-2020), June 24-27 (October 6-8), Moscow - Saint-Petersburg, Russia

Decision Making in Road Traffic Coordination Methods: A Travel Time Reduction Perspective

International Conference Engineering Technologies and Computer Science: Innovation and Application (EnT-2020), June 24-27 (October 6-8), Moscow - Saint-Petersburg, Russia

Mădălin-Dorin Pop Automation and Applied Informatics

Department Politehnica University of Timișoara

Timișoara, Româ[email protected]

mailto:[email protected]

2Objectives

Mădălin-Dorin Pop / Decision Making in Road Traffic Coordination Methods: A Travel Time Reduction Perspective / EnT-2020

Overview of related works

Overview of intersections

configuration methods

Analysis of a real intersection

properties

Study of travel time and number of

vehicles for different intersection

configuration methods

Identify the most

appropriate intersection

configuration method

3Intersections Configuration Methods → Uncontrolled Intersections Configuration

• characterized by the lack of traffic signals

or signs for traffic flow control;

• vehicles flow through these intersections

done by applying the priority-to-the-right

rule;

• this type of configuration method can lead

to gridlock if the road network becomes

overloaded.


4Intersections Configuration Methods → Signalized Intersections Coordination - Traffic Lights

• solves the problem of gridlock mentioned

as disadvantage of previous coordination

method in case of overloaded road

networks;

• the reduction of traffic congestion

depends on the green intervals setting;

• two modes of traffic lights configuration:

• based on stop lines;

• based on lane connectors.



Based on stop lines:

• all vehicles from the lanes affected by the red traffic light shall wait for the green light,

independent of the direction chosen to leave the intersection;

• priority-to-the-right rule applies for left turn.



Based on lane connectors:

• highlights the possible directions that can be reached, taking into account the current lane

of the studied vehicle;

• advantage - the additional

green time that can be

given to the vehicles that

are turning right.


7Intersections Configuration Methods → Roundabouts

• one-way circular lanes that have entry

points for vehicles coming from several

directions;

• the movement of vehicles entering a

roundabout is conditioned by giving

priority to the vehicles already present in

the roundabout.


8Intersections Configuration Methods → Agent-Based Modeling – AnyLogic Simulation Environment


Symbol Name Significance

CarSourceCreates the cars and attaches the coordinates according to aspecified location. Car arrivals can be defined using the arrivalrate, interarrival rate, etc.

CarMoveTo

Is used for car movement management. The destination can bea stop line, a road, parking place etc. If the movement to aspecified destination is not possible, the car can be routed to adestination specified using port onWayNotFound.

CarDispose Eliminates a car from the road network.

TrafficLightControls the movement of vehicles using the stop lines or laneconnectors by associating the timing for each color signal. Thisblock ensures the simulation of traffic light behavior.

9Four-Way Intersection – A Case Study of Circumvalațiunii Intersection (Timișoara - Romania)

• Significance of represented four-way intersection components:

• 𝑠𝑖 , 𝑖 = 1,4 - stop lines;

• 𝑂1… 𝑂4- origin nodes;

• 𝐷1… 𝐷4- destination nodes

• The nodes from the simulated road network are:

• Open Ville (top);

• Cetății Boulevard (left);

• Jiul Passage (bottom);

• Gheorghe Dima Street (right).


10Traffic Simulation Model – A Case Study of Circumvalațiunii Intersection (Timișoara - Romania)

• Traffic Model for the vehicles starting from Open Ville):


11Traffic Simulation Model – A Case Study of Circumvalațiunii Intersection (Timișoara - Romania)

• Route choice probabilities:


Origin nodesDestination nodes

Open VilleCetății

BoulevardJiul Passage

Gheorghe Dima Street

Open Ville 0.05 0.15 0.65 0.15

CetățiiBoulevard

0.55 0.05 0.20 0.20

Jiul Passage 0.70 0.05 0.05 0.20

Gheorghe Dima Street

0.60 0.05 0.25 0.10

12Traffic Simulation Results – A Case Study of Circumvalațiunii Intersection (Timișoara - Romania)

• Travel time and number of vehicles for different intersection configuration methods:


Configuration typeTravel time Number of

vehiclesMin (s) Max (s) Mean (s)

Uncontrolled intersection

14.074 793.007 251.933 174

Traffic lights – stop lines

14.060 445.112 93.050 453

Traffic lights – lane connectors

19.240 339.611 89.113 460

Roundabout 14.017 298.157 82.078 476

13Conclusions

Purpose:

• identify the most appropriate decision of intersection configuration method based on

specific intersection case study.

Contributions:

• overview of related works regarding the intersections configuration methods;

• present a case study of real intersection;

• show the impact of intersections configuration methods on reducing the travel time,

increasing the number of vehicles crossing the road network and, implicitly, reducing

traffic congestion.


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https://help.anylogic.com/index.jsp

Decision Making in Road Traffic Coordination Methods: A Travel Time Reduction Perspective

International Conference Engineering Technologies and Computer Science: Innovation and Application (EnT-2020), June 24-27 (October 6-8), Moscow - Saint-Petersburg, Russia

Mădălin-Dorin Pop Automation and Applied Informatics

Department Politehnica University of Timișoara

Timișoara, Româ[email protected]

Questions?

mailto:[email protected]

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Decision Making in Road Traffic Coordination Methods: A ...en-t.org/2020/presentation/pop.pdf · and Application (EnT-2020), June 24-27 (October 6-8), Moscow - Saint-Petersburg, Russia