How long does it take to create a network?

Question What are typical times to create a network? Answer For a network with three simple, 4-leg junctions the geometric model will be finished within a few hours.…

Maximum number of vehicle/driver types

Question How many different types of vehicles/drivers can be modeled? Answer Vissim uses vehicle-driver-units. There are practically no limits on the number of vehicle and driver types. By…

Platooning effects

Question Can platooning effects be modelled? Answer Yes, it is possible.Definition one: group of cars (known as a "platoon") the size of which is defined by the signal…

Junction types

Question Is it possible to model junction types such as signal-controlled intersections, roundabouts, priority junctions or merges in Vissim? Answer Any junction geometry can be modeled (signal-controlled intersections,…

Assign new static route if a vehicle still has an assigned route

Question Can a vehicle get a new static route if it still has a route assigned? Answer No, a new static route will be considered by a vehicle…

Maximum size of a network

Question What is the maximum size of a network that Vissim can handle? Answer The largest Vissim license has no built-in limit. Therefore the network size is limited…

Conflict areas: priority ignored

Question Some conflict areas appear to operate with different priority than that as coded. Yielding vehicles appear to take priority. Why is this and how can…

Is it possible to model overtaking into oncoming traffic lanes?

Question Is it possible to model overtaking into oncoming traffic lanes, e.g. for a rural single-lane carriageway? Answer Yes, it is possible to model overtaking into oncoming traffic…

Provision or limitation for motorways

Question Is there any specific provision or limitation for motorways? Answer Vissim has separate models for urban traffic and for motorways (car following models - Wiedemann 74 and…

Modelling an incident with one or more blocked lanes

Question How can I model an incident where one or more lanes are blocked? Answer The recommended option is included in the standard Vissim installation at "..\Examples\Training\SpecialModeling\Incident". The…

How can I find out more about the specifics of gap acceptance?

Question How can I find out more about the specifics of gap acceptance? Answer Since gap acceptance can vary from location to location, this variable is considered an…

Modelling roads below the surface

Question Is it possible to model roads below the surface? Answer If you define a negative height to a link, the link will be displayed below the 0-plain…

Enter text in the network editor

Question How do I enter text in the Network Editor? Answer In the Network Editor, you can view the attributes of a network object in a text box…

How are merging areas modelled?

Question How are merging areas modelled? Answer A merging area should be modelled as a single link with as many lanes as the main road plus the merging…

Is it possible to model toll gates?

Question Is it possible to model toll gates? Answer Yes, by using stop signs with an optional time distribution.  

Blocking back/shock waves/lane drop/lane gain/variable message sign (VMS)

Question Is it possible to model features such as blocking back, shock waves, local knowledge by some drivers (using rat runs), lane drop and gain, variable…

Update/determine route choice

Question How is the route choice determined and updated during each run? Answer Route choice can be determined by the user (static routing) or computed iteratively with the…

How do I model right turn on red (RTOR)?

Question How do I model right turn on red (RTOR)? Answer Please refer to the PTV Vissim Help (https://cgi.ptvgroup.com/vision-help/VISSIM_11_ENG/) > "Creating and editing a network" > "Modeling right-of-way…

How can I reset the PTV Vissim dialogs

Question Some PTV Vissim dialogs do not have the right size or position. How can I reset this to the default? Answer 1) Choose Edit > User Preferences.2)…

How to use key combinations (hotkeys) PTV Vissim

Question Are there any key combinations (hotkeys) in PTV Vissim that allow me to execute certain functions directly? Answer Yes, there are built-in hotkeys in PTV Vissim, and…

High-speed trains do not stop and disappear

Question I have high-speed trains in my network that are slowing down but not stopping at the station. Then the trains disappear at the end of…

Grade-separated junctions

Question How does PTV Vissim handle grade-separated junctions? Answer Even if you draw links crossing each other, the program will not recognize this as an intersection unless you…

Add time of day clock to video

Question How can I display a clock in the Network Editor or in an exported *.avi video that displays the simulation second or time of day…

Are models built in earlier releases of PTV Vissim compatible with later releases?

Question Are models built in earlier releases of PTV Vissim compatible with later releases? Answer Yes, generally, models built in earlier releases of PTV Vissim can be read…

How to avoid vehicle lane changing immediately in front of stop lines

Question Is there a way to avoid vehicle lane changing immediately in front of stop lines (signals/priority rules)? Answer Yes. For a short section (e.g. 20m) in front…

How do I avoid queue spillbacks (tailbacks)?

Question How do I model an intersection where queue spillbacks (a.k.a. tailbacks) do not occur?And as I am trying to code a yellow box junction, is…

Add circular link / Radius

Question How can I draw curved Links and specify a radius? Answer There is no direct way to enter a radius, but there are workarounds:A) Select "Add Circular…

How do I model vehicles moving from a double-lane Link to single-lane Link?

Question I use two Connectors (one for each Lane) when coming from a double-lane Link to a single-lane Link. How can I avoid unneccesary lane change…

How can I determine vehicle positions in WGS 1984 or use georeferenced background images?

Question How can I determine vehicle positions in the coordinate systems 'WGS 1984' or 'Sphere Mercator'/'Mercator (sphere)' or use background images meeting some well-defined coordinate system? Answer PTV…

How can I model parking in PTV Vissim?

Question How can I model parking in PTV Vissim? Answer These are the options for the use of the network element Parking Lot:1. For the use of static…

Modelling PT lines, PT stops and PT signalization

Question How are bus lines and stops modelled? Are bus detection, signals and priority measures modelled? Answer Public transport is modelled as trams and/or buses in high detail…

Specify banned movements

Question How are banned movements specified? Answer When using static routes, a movement is banned if there is no route assigned to that movement (if routes do exist…