Chapter 3
GLD and iAtracos
For the simulations of the new traffic light controllers a realistic traffic simulator
is needed. Programmers of the University of Utrecht have created a good traffic
simulator with a lot of usable features. This project has been extended by a group
of programmers from Argentina. My project started from the iAtracos project [ea]
which is extended with extra physics, driving behaviour etc. In this chapter a short
overview is given of the delivered features of the GLD and iAtracos projects.
3.1 GLD
Green Light District (GLD) was developed by Intelligent Systems Group at the
University of Utrecht [gld, WVVK04]. GLD is an open source program which
supports editing complex city maps, traffic simulation on these maps and changing
parameters for the simulation. Evaluation tools support displaying analysed data
of the simulation in a various number of ways:
• In-view statistics: this will colour junctions to indicate the average waiting
time.
• Statistics window: contains precise data on the current simulation map.
• Tracking window to track total waiting queue length, average trip waiting
time or average junction waiting time.