Users Guide - the Virginia Modeling, Analysis and Simulation Center

12.07.2015 Views
Real Time Evacuation Planning Model (RtePM)A Decision Support Tool for Emergency Managers and First RespondersThe Selected Roads screen provides the following information:Name: name of the roadwayFree flow Speed: the average speed of traffic in a freeflow pattern in miles per hourFunctional Class: corresponds to the filters described aboveLanes: how many lanes each directionSpeed Limit: posted speed limits on the roadway per direction.A user may desire to remove a road from the evacuation network. This is accomplished by choosing the“Remove” tool on the “Selected Roads” sub tab and then selecting the desired roadway(s) to beeliminated from the simulation (Figure 26). The area removed will no longer be shaded. Similar to the“Add” button, roads may be deleted via the Freehand Polygon, Bounding Box or Point selection.Figure 26 -- Remove Road ToolsAll road data can be removed by selecting thebutton.Evacuation End PointsEvacuation End Points can be selected and weightings for their use may be defined to attempt toaccurately reflect the way people leave the area selected. Evacuation End Points use the sameiconography as Evacuation Area and Selected Roads for adding and removing data from the scenario.Evacuation End Points also applies the same filters as Selected Roads. Active endpoints are displayed onthe map as yellow circles (Figure 27). Inactive endpoints are greyed out. To activate them, click the boxnext to the roadway of choice.End Points are made “Active” by clicking the box next to its name. Active endpoints are included in thescenario and those with blank check boxes are not. Of the active endpoints, a user may assign weights tothem to make those endpoints more desireable than another. This allows a user to emphasize the impactsof some routes. By default all end points are weighted equally and may be changed by double clickingthe weight with the left mouse button and entering the new value.Note: To avoid conflicts when defining a road networks, End Point Assignment “Percentages” under theEvacuation Area tab should not be used in conjunction with Evacuation End Points “Weights” under theRoads tab.17

Real Time Evacuation Planning Model (RtePM)A Decision Support Tool for Emergency Managers and First RespondersModified RoadsFigure 27 -- Evacuation End PointsUnder the “Modified Roads” tab, users can designate roads for contraflow, shoulder use, or as closed.Selecting roads for modification is done by clicking the green plus sign (located in the upper right cornerof window) then clicking edit, Figure 28. Once opened for editing, road segments are selected on themap. After the roadways have been selected, click the “editing” button again. To add contraflow,shoulder use and/or closure options, the user must select the checkbox next to the option and apply thefilters for the road types of interest. Modified roads are highlighted green on the map when selecting.The left side of Figure 28 zooms into the evacuation zone to show an example of a 2 hour road closureduring the evacuation.Additional RoadsFigure 28 -- Modified Roads DisplayAdditional roads can also be specified in RtePM. This is done via the “Additional Roads” tab using thesame process outlined in Modified roads. Select the green plus sign (upper right corner of the figurebelow) to add a section name, then select the “choose” button to define the points on the map. Click mapto identify the beginning of the new roadway then click the map to identify the end of new road segment.New roadways can only be added between intersections. Free flow speeds and lanes are user defined18

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