Modeling, Simulations Can Help a City Offer More Efficient Exodus.

Discusses computer modeling and simulations that can help municipal governments evacuate cities. Description of a simulation created by Crisis Simulations International; Questions arising from watching the stalled exodus and traffic jams in Texas ahead of Hurricane Rita; Percentage increase in road capacity from enacting a "contra-flow" technique, which changes the inbound direction of a given highway to outbound, according to traffic engineer Avi Polus of Technion-Israel Institute of Technology, Haifa; Recommendations regarding exit and entrance ramps; Changes that should be made on secondary roads; Planning steps necessary to make an exodus flow more smoothly; Other recommendations for a smooth evacuation.