VMASC Nov2009 - the Virginia Modeling, Analysis and Simulation ...
VMASC Nov2009 - the Virginia Modeling, Analysis and Simulation ...
VMASC Nov2009 - the Virginia Modeling, Analysis and Simulation ...
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Person/Day<br />
Dmnl<br />
System Dynamics <strong>Simulation</strong> Model<br />
Normal moving<br />
in rate<br />
Effect on moving in<br />
Effect on<br />
Inmigration<br />
birth rate<br />
Equiv<br />
birth<br />
Effect on moving<br />
iout<br />
time fraction<br />
Normal moving<br />
out rate<br />
moving in<br />
Population<br />
moving out<br />
death<br />
Total travel<br />
dem<strong>and</strong><br />
life expect<br />
Average number of trips<br />
per day per capita<br />
Percent of travle satisfied<br />
by mass trasnportation<br />
Traveled distances increase<br />
due to population increase<br />
Average diastance<br />
per trip<br />
Volume of perosnal<br />
vehicles on road<br />
Percent of trvaked<br />
using car, van, truck<br />
Actual vehicles<br />
occupancy rate<br />
Vehicles<br />
ocuppancy rate<br />
Time frame<br />
New vehicle<br />
occupancy rate<br />
Volume / Capacity<br />
Total effective lane<br />
mile capacity<br />
Sub-model:<br />
Environmental<br />
Impact<br />
2<br />
1.5<br />
1<br />
0.5<br />
0<br />
Volume / Capacity<br />
0 100 200 300 400 500 600 700 800 900 1000<br />
Time (Day)<br />
"Volume / Capacity" : Current<br />
2,000<br />
1,500<br />
1,000<br />
500<br />
Effect on moving in<br />
Sub-model:<br />
Economic Impact<br />
0<br />
0 100 200 300 400 500 600 700 800 900 1000<br />
Time (Day)<br />
Effect on moving in : Current<br />
• Presented: ModSim World 2009 – <strong>Virginia</strong><br />
Beach, VA