brief intro

In this (ring-road multi-lane) traffic simulation, one can take the wheel of a car for changing lanes, acceleration and deceleration in real time, also creating congestion. One can observe the traffic dynamics and stop-and-go waves through plotting the time-space diagram of trajectories

all you need is Matlab

I used R2023a

how to run the simulation

0. Make sure everything is under the same folder
1. Change settings in "Z_Setup.m"
2. Type "Main_A_Simulation" in Command Window to run the simulation and interactive interface
3. Type "Main_B_PlotTrajectory" in Command Window to plot the trajectories
4. Simulation results (data) are saved in the folder "SimulationResult" Note: I used a MacBook Pro. The position and size of the animation may vary depending on the screen resolution. I will improve it when I have more time.

how to interact

1. Press 'Enter' on the keyboard to enter the interactive mode; Press it again to quit
2. Press 'Up' - Accelerate
3. Press 'Down' - Decelerate
4. Press 'Left' - Change lane to left
5. Press 'Right' - Change lane to right

model

A variant of Cellular Automata (CA) model is used. see slides for CA https://github.com/gotrafficgo/traffic_flow_theory_slides

1. Velocity-Dependent-Randomization (VDR) model -- that is why you see two slowdown probabilities in Config.m
2. Each cell is 1 m long -- that is why you see the animation is quite smooth
3. Instantanous lane changing

still working on convincing myself to release all the code

Any suggestions are welcome!

what does the simulation look like

Video of the simulation and interaction

Time-space diagram of trajectoris in a lane

Mario version

Try the Super Mario version by downloading "Mario_Version.zip". Have FUN!