Authors: Necula Emilian, Necula Raluca, Adrian Iftene
Faculty of Computer Science,
”Alexandru Ioan Cuza” University of Iasi, Romania
Distributed Traffic Management System
1SYNASC 201025 September 2010
• Motivation
• Research foundation
• Proposed solution
• Application architecture
• Simulation statistics
• System evaluation
• Conclusions
Content / Outline
2SYNASC 201025 September 2010
• The costs of improving the existing infrastructure
• Problems of road traffic: congestion
• Negative effects of congestion
Motivation
3SYNASC 2010
Solution: Traffic Management, Intelligent Transportation Systems25 September 2010
• Traffic: complex system with 2 approaches:
- Macro-modeling
- British TRANSYT Program, American FREQ Program, FREFLO Prog
- Micro-modeling
- AIMSUN2,CORSIM,FOSIM,HIPERTRANS, HUTSIM, MicroSim, MITSIM, OLSIM
• Expert Systems
• Prediction-based optimization
• Fuzzy logic
• Reinforcement learning
• Intelligent agents
Research foundation
4SYNASC 201025 September 2010
• Including the concepts of: adaptability and monitoring
• Intuitive representation of the road infrastructure
Proposed solution
5SYNASC 201025 September 2010
• Java
- architecture neutrality
- portability, flexibility, modularity
- reuse of code
• Qt
- graphical user interface
- intuitive API
- easy communication between components and the core of the application
• PostgreSQL
- data are managed in a PostgreSQL relational database
Used technologies
6SYNASC 2010
Java Qt GUI
25 September 2010
Application architecture
7SYNASC 201025 September 2010
• OSM (Open Street Map)
- covers all the European road network and a big part of national
roads (~90%)
- the maps can be imported both direct from the web both from the
local machine
Used formats (I) - OSM
8SYNASC 201025 September 2010
• SUMO (Simulation Of Urban Mobility)
- employed at configuring the simulator
- XMLs (road elements) are generated by using TME and sumo.exe
- combines the physical level with the logical level of the
application
Used formats (II) - SUMO
9SYNASC 2010
elements of road network
nodes(*.nod) edges(*.edg) events(*.evt) traffic lights(*.tls) routes(.*rou)
25 September 2010
Important modules – Editing routes and scenarios
10SYNASC 2010
configure navigating scenarios
can be configured parameters
specify start and end road edges
or similar areas ItemArea
25 September 2010
• Traffic light = node with special properties and methods
• The default logic (red/yellow/green intervals) can be
modified from:
Important modules – Traffic light logic
11SYNASC 2010
dialog window
25 September 2010
• Traffic diversification by configuring physical attributes and
behavioral attributes
Important modules – Vehicles editing
12SYNASC 201025 September 2010
• Highlighting the statistical data on the map
• Coloring the street edges with specific set of colors (red - high
values, green - normal values) regarding:
- the density of cars
- average/maximum speed
- number of stoppings
- degree of occupancy (%)
The final viewing of data (I) - On Map
13SYNASC 201025 September 2010
- graphic by points - graphic by time intervals
The final viewing of data (II) – by Charts
14SYNASC 201025 September 2010
• The advantages of dynamic logic for the traffic lights
- maintaining a fluent traffic even in the cases with high traffic fluctuations
(first hours in the morning, lunch, input/output arteries in the city) or
unexpected ones (unfavorable weather conditions, accidents)
- static vs. dynamic approach
System evaluation
15SYNASC 201025 September 2010
• Our application (TME) offers:
- a scalable and flexible model for future developments
- the possibility of manipulating extensive road infrastructures
- an intuitive environment and with control facilities on scenarios
- statistical data with impact for selecting the areas with traffic problems
• Future work:
- taking into account pedestrian traffic
- including of a system based on recommendation
- implementing of a module for mobile and wireless devices, PDA
Conclusions
16SYNASC 201025 September 2010
Demo
25 September 2010 17SYNASC 2010
Thank you !
18SYNASC 201025 September 2010
Questions ?
Q & A
19SYNASC 201025 September 2010
