Mac users must have Mac OS X What would you expect to happen if you start a run with both switches turned on, so the cars become separated with unequal distances, but then you turn off one or both of the switches? This is a sample program for experimenting with factors that can upset the stability of a system of drivers on a circular track. How about the effect of increasing the noise factor or the reaction delay? These models can, of course, be improved.
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Can you modify the program to improve upon it?
In order for this to work, this file, your model file Racetrack. You would need to download the NetLogo program from its website, as well as the code for this model, in order to do this of course.
Download any NetLogo version
In particular, if a driver perceives that the car in front is farther away than it was at the beginning of the experiment, then he or she floors the accelerator in an attempt to catch up. What would you expect to happen if you start a run with both switches turned on, so the cars become separated with unequal distances, but then you turn off one or both of the switches?
On some systems, you can test the applet locally on your computer before uploading it to a web server.
Try multiple runs to see how the outcome varies from one to the other. You can copy NetLogoLite.
If you want to do this, it might be best to offer it as an alternative control procedure within the program with a chooser button on the input screen to select one or the other of the procedures. For example, should longer cycle lengths increase or decrease the time to a crash?
Download any NetLogo version
In the process, you may find many other very interesting NetLogo programs available in the model library set up by the code developers.
Mac users nftlogo have Mac OS X Java must be enabled in your browser settings. This is a sample program for experimenting with factors that can upset the stability of a system of drivers on a circular track. What happens if you turn one of the two switches on and the other one off? Experiment with all the input values and switches to get a feel for nftlogo to use the model and to see if you can anticipate what the effect will be of changes you make. On the other hand, if the driver perceives that the car in front is closer than it was at the beginning of the experiment, then he or she slams on the brakes, which is assumed to decelerate the car at a maximum rate.
Try it both ways and explain the results. If certain outcomes are very unlikely, remember that they will only occur on one run out of many. These models can, of course, be improved. It uses a very simple model, called a bang-bang model, for the acceleration and braking of each car. You may contact him with any comments, suggestions, or upgrades at chadlock bentley.
This particular neylogo was developed by students of Prof. In terms of corresponding to reality, which of the two control actions, acceleration or braking, represents the greatest weakness in this program? This estimation is subject to netlkgo, modeled as a random multiplier on the actual distance with a range specified by another input parameter. Do you see any patterns in behavior with the model that remind you of your own experience with traffic or even perhaps traffic accidents?
This will save disk space for you and download time for your users. The applet requires Java 5 or higher. How about the effect of increasing the noise factor or the reaction delay? You don’t need to include everything in this file in your page.
Charles Hadlock at Bentley University. The homepage for downloads and further information is http: Windows and Linux users may obtain the latest Java from Oracle’s Java site. It doesn’t work on all systems, though, so if it doesn’t work from your hard drive, please try uploading it to a web server.