CORSIM
Version 5.1 of CORSIM offers the following changes:
· CORSIM Interface. CORSIM now provides its own interface and driver software, separate from TShell. The CORSIM Driver component, CORSIMDriver.dll, provides a user interface for running CORSIM and includes a built-in, multi-run capability. The CORSIMDriver.dll runs the CORSIMServer.exe, which executes the CORSIM simulation DLL. This architecture allows multiple simulations to be running at one time by simply starting a new CORSIM run on a different test case. Note that with this new architecture, existing Run Time Extensions (RTE) will need slight modifications to work correctly with the new components.
· Output Processor. In addition to the user interface, the CORSIM Driver provides access to a new output data processor. The output processor enables you to accumulate user-selected statistics and summary data during multiple runs of CORSIM. It writes the collected data to an Excel workbook, a comma-separated file, and/or a tab separated file.
· Increased Network Size. CORSIM internal nodes can now be numbered between 1 and 6999, increasing the upper limit from 1000. Accordingly, the number of allowed internal nodes and links has increased. No changes were made to the interface node numbering or the entry/exit node numbering. Source/Sink nodes can now use any internal node number instead of requiring a number between 2000 to 2999. In implementing these improvements, no changes to the TRF file format were required. Therefore, TRF files that ran with the previous version of CORSIM will continue to run with the new version of CORSIM.
To facilitate the increased network size, CORSIM now dynamically allocates memory for many of its internal data arrays. The benefits of this change are that small networks will use a smaller amount of memory and network size is no longer limited by fixed array sizes (size is limited by the number of nodes supported and the amount of memory your system provides). Version 5.0 of CORSIM always used approximately 50 megabytes of memory, regardless of network size. Now CORSIM uses approximately 25 megabytes for small networks of a few links and nodes or upwards of 600 megabytes for a 7,000-node network with 100,000 vehicles. The following network limits were changed:
Internal node number from 1000 to 6999.
Number of links from 2,000 to dynamic.
Max number of nodes (including interface and entry/exit) from 500 to 9,000.
Max number of vehicles from 20,000 to unlimited.
· Longer NETSIM Links. Increased the NETSIM limitation of maximum link length less than or equal to 4000 feet. The new limit is 9999 feet.
· Control delay was aggregated over all turn movements in the simulation output table. There is now a new table in the NETSIM movement specific output section that includes control delay by turn movement.
· Corrected several errors in determining leaders and followers on complicated geometries, including clover leafs.
· Fixed several problems with bus movements. Buses now use lane change logic to determine if there is an acceptable gap in the traffic stream.
TRAFVU
Version 5.1 of TRAFVU offers the following updates:
· Bitmap Background. TRAFVU now displays the bitmap background used by TRAFED. When exporting the TRAFED network to a CORSIM input (.TRF) file, TRAFED writes the bitmap information to the .TRF file. TRAFVU then uses that information to display the bitmap in the correct location on the network map. From the Display menu and a corresponding toolbar button, you can toggle the display of the background bitmap.
· Link Names. TRAFVU now displays link names on the network map next to links that have entries on record type 10 in the .TRF file. From the Display menu and a corresponding toolbar button, you can toggle the display of the link names. Using the Preferences dialog, you can control the color, size, and placement of the link names on the network map.
· User Preferences. TRAFVU now maintains application and window settings for a user between TRAFVU sessions. Each user can have different preference settings. Application-level preferences include: dynamic scrolling, tool tip display, and APC window settings (including size and placement). Window-level preferences include: object display button settings, vehicle color and detail properties, background color, link name settings, and window component (toolbar, legend, status bar) display preferences.
· Zoom Capture and Set. The Zoom Capture and Set dialog has been modified to enable you to specify the file to which window coordinates are saved or from which they are retrieved. This allows you to name and save multiple sets of coordinates for a single or multiple cases.
TRAFED
TRAFED was first introduced as part of the TSIS 5.0 package; the latest changes include:
· Range checking and default setting has been improved.
· The TNO file is read in as a XML file so the order and content can change more easily.
· You can now scroll past the edge of the existing network using the scroll buttons.
· A new distance-measuring tool has been added to the toolbar. This allows you to more easily check the scale of a bitmap image.
· The TRF file can be sorted during export so that most of the records are sorted by their first two fields.
· Link splitting has been improved and no longer resets the signal controllers.
· Numerous bugs have been fixed including: Fixed-time Controller Offset has been fixed to be time period dependent; the turning alignment (RT 14) dialog has been improved and the associated code has been fixed.
· Turning volumes present in the TRF file are now preserved during translation to TNO file format. Previously, the volumes were changed to percentages based on CORSIM’s use of the values.
TSIS Script Tool
Version 5.1 of the TSIS Script Tool offers the following upgrades:
· New Script Interfaces. The Script Tool provides improved interfaces for better interaction with TShell and for running CORSIM. The Script Tool User's Guide includes a new, detaiLED Reference Manual for the functions defined by these new interfaces. Previously written scripts may require minor modifications to operate correctly within TSIS 5.1.
· New Sample Scripts. TSIS 5.1 includes seven sample Visual Basic scripts that use the new Script Tool interfaces and that demonstrate the new capabilities of the CORSIM component, including multiple runs and extraction of data from output files.
TShell
TShell is the TSIS environment's GUI that integrates the TSIS tools and allows you to effectively manage your traffic analysis projects. It offers the following updates:
· Project View Sorting. The Project view now provides the capability of sorting the project tree either by the names of the items on the tree or by the modified dates of the files associated with the tree items.
· Improved tool management. Changes include the ability to define and use multiple tools of the same component. Tools are now stored in the registry by their unique tool name instead of by GUID.
