Traffic Light Simulation

1
Traffic Light Simulation

• Lynn Jepsen

2
Introduction and Background

• Try and find the most efficient way to move cars
  through an intersection at different traffic
  densities
• Want to see waiting time and queue length go down
• Green light usage needs to go up
• Many traffic simulations out there, but none that
  I have seen with a learning light

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What it looks like

• Simulation that obeys most rules of the road
• Graph of efficiency variables

4
Simulation

• Cars on each lane take up a certain number of
  spaces and have a certain speed at each instant
• Speed and space is update every .1 sec along with
  graphics
• Speed up when object in front is getting farther
  away but with a max. accel.
• Slow down for red and most yellow lights
• Use Java to show graphics

5
Light Algorithm

• Uses previous data (traffic density, efficiency
  variables, cycle length, and ratio)
• Picks best cycle length (length of one cycle in
  intersection) and ratio(ratio of green light time
  in each direction) from previous data that has
  the same traffic density

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Results and Conclusions

• The simulation looks realistic
• Light algorithm does cause slightly fewer
  backups, but could be improved further
• Before light algorithm - gt