🚦 Traffic Simulation System

A multi-threaded traffic simulation system developed for an Operating Systems course. It models traffic flow through multiple intersections with support for emergency vehicles and intelligent traffic light controllers.

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✨ Features

🔄 Multi-threaded Architecture

Specialized threads for:

• Traffic light control
• Vehicle generation
• Emergency vehicle handling
• Vehicle movement between roads
• Real-time GUI updates
• Configuration management
• System performance monitoring

⚙️ Dynamic Configuration

• Hot-reloading of config.txt
• Adjustable parameters:
  • Simulation duration
  • Number of intersections and roads
  • Vehicle generation rates
  • Emergency vehicle limits
  • Scheduling policies

Real-time GUI (via ncurses)

• Visual representation of intersections
• Traffic light states: RED / GREEN / YELLOW
• Vehicle counts per road
• Emergency vehicle indicators
• System statistics dashboard

Emergency Handling

• Priority scheduling for emergency vehicles
• Special logic for critical situations
• Emergency vehicle statistics tracking

Performance Monitoring

• Real-time CPU usage
• Memory consumption tracking
• Detailed traffic statistics

Logging System

• Timestamped event logging
• Comprehensive simulation records
• Persistent log storage (traffic_sim.log)

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Operating System Concepts Implemented

🧵 Multi-threading

• POSIX pthreads for concurrent execution
• Mutexes for thread-safe operations
• Condition variables for synchronization

🔒 Process Synchronization

• Mutex locks for shared resource protection
• Condition variables for efficient waiting
• Atomic operations on shared data

🔄 Inter-Process Communication (IPC)

• inotify for dynamic config monitoring
• Shared memory for intersection states
• Conditional signaling between threads

⚙️ Resource Management

• Dynamic memory allocation
• File I/O for config and logging
• System-level resource tracking

🗂️ Scheduling Algorithms

• Priority-based scheduling for emergency vehicles
• Adaptive traffic light timing
• Load-based duration calculation

⏱️ Real-time Systems

• Timed operations with usleep
• Periodic thread execution
• Real-time GUI/statistics updates

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Prerequisites

• Linux environment
• GCC compiler
• Ncurses library
• POSIX Threads (pthreads) support

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📁 File Structure (optional)

traffic_simulation/
├── src/
│   ├── config.c
│   ├── gui.c
│   ├── ipc.c
│   └── logger.c
│   ├── main.c
│   └── main.h
│   ├── monitoring.c
│   └── scheduler.c
├── config.txt
├── Makefile
└── README.md
├── traffic_sim.log (this will be created at the run time)

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🏁 Getting Started

# Clone the repo
git clone https://github.com/kinza7124/traffic_simulation.git
cd traffic_simulation

# Build the project
make clean
make 

# Run the simulation
./traffic_sim

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📜 License

This project is licensed under the MIT License. See LICENSE for more information.