Technical details
Efficient network editing
- Easy-to-use and intuitive graphical network editor
- Creating and editing traffic networks based on background images (e.g. city maps, layout sketches, aerial photographs and CAD drawings in different digital formats)
- Exact modeling of lane geometry and network element positions (signal heads, regulatory signs)
- Possibility of importing VISSIM networks which have been exported from VISUM (together with travel demand matrices and route information). By pre-defining standard intersections in VISUM it is possible to quickly create larger traffic networks for microscopic simulations
- Efficiency is improved with the help of the "read additionally"-function:
- Several users can access and edit data on one large project at the same time
- Sub-area networks can be aggregated to one large network
- The user can create a library of sub-area networks or access pre-defined standard intersections.
Sophisticated vehicle behavior modeling
- The vehicle behavior model is based on the Wiedemann car-following model
- Time steps as low as 1/10 second
- Modeling options for urban and motorway/freeway traffic
- Powerful lane-changing behavior models provide the user with realistic modeling of various merging situations (e.g. motorway junctions, zip merge)
- Modeling parallel vehicle flows, such as
- cars and motorbikes/cycles driving in the same lane
- overtaking inside wide lanes
- Expandable collection of different vehicle types and user-defined changes of driving behavior (e.g. desired speed distribution, acceleration and car-following behavior)
- Selecting between different types of traffic demand modeling:
- Static routing based on turning movement data/intersection counts
- Free route choice using dynamic assignment: transparent dynamic assignment module offering a variety of parameters, using trip purpose-related and time-dependent origin-destination matrices. True multi-class networks, i.e. route choice can be determined for each vehicle type, thus allowing pedestrian precincts, bus lanes, HOV lanes, driving restrictions for trucks, etc. to be modeled.
Urban and regional traffic control
- Modeling priority rules to model non-signalized intersections, conflicting movements at signals or keep-clear-areas.
- Highly-detailed modeling of intersections of any kind of geometry
- Fixed time signal controls and any vehicle-actuated signal control can be coded with VAP, the traffic control language integrated into VISSIM.
- Interfaces to adaptive signal controllers, such as SCATS, SCOOT and many others
- Open C-interface for signal control manufacturers and developers of control programs
- Application of VAP to model Intelligent Transport Systems (ITS) and regional control operations such as dynamic speed control or alternative route guidance systems.
- Numerous functionalities for testing vehicle-actuated control operations via manual detector activation and reproducibility using macros.
Detailed analysis options
- VISSIM provides a wide range of user-defined parameters such as number of vehicles, average speed, travel time, delay time and length of traffic tailbacks.
- The user can configure the selection of parameters (average values, distributions) and select between database or text file as output format.
- Convenient access to the most important parameters by means of pre-defined node evaluations.
- Highly aggregated output data such as number of vehicles and delays within the entire network.
- Automatic generation of Microsoft Excel® evaluations to be used for reporting
- Determining signal control parameters like min/max and average green time per signal group/phase, waiting time after detector calls and display of dynamic signal timing schedules and user-defined parameters.
- It is possible to export simulation results to VISUM in order to display macroscopic parameters within the network (e.g. flow maps, flow bundles, node flows)
A variety of animation capabilities
- Visualizing vehicle movements within the network in 2D and 3D
- Large vehicle library with various 3D models
- Displaying the vehicle movements from the driver's seat in 3D mode
- Realistic 3D display by importing 3D objects and modelling simple static 3D objects using the optional module V3DM
- Creating AVI films in VISSIM. Editing and storing keyframes as a story book. Additionally, keyframes can be used as pre-defined views that can be quickly accessed.
- Free VISSIM-Viewer for display of short simulations or animations of network files.
- Color coding of attributes and vehicle status for the evaluation and optical differentiation of complex traffic flows.
