Vissim Tutorial - How to model variable speed limit

[@bashiruotokiti5340]

Nice to see more resources available online in visim. When I used vissim to run simulation for my masters thesis I couldn't find much help so I had to read manuals and try to implement things myself. Much improvement good job

[@MatyasLemberTutorials]

I remember those times :)

[@rubaalbaldawi6670]

MATYAS YOU ARE THE BEST.

[@MatyasLemberTutorials]

Cheers mate, thanks for watching!

[@melutza8]

Thank you for sharing your knowledge!

[@MatyasLemberTutorials]

Thank you for watching!

[@melutza8]

@@MatyasLemberTutorials I Hardy Found a specialist that is sharing such valuable content, so I am a big fan :)

[@MatyasLemberTutorials]

Thank you for watching my videos!

[@hamedimohsen]

Hello Matyas, thank you for sharing your knowledge and experience. I am currently working on a project to simulate a gas station in Vissim. For the service time, I need to define a normal time distribution bounded between, for example, 93 and 380. However, in Vissim (at least in the 2020 version I am using), I couldn’t find an option to explicitly set lower and upper bounds. The only editable parameters are the mean and standard deviation, and the lower bound is always fixed at 0. Do you have any insights or suggestions regarding this issue?

[@MatyasLemberTutorials]

Hi, in order to do that you might want to use empirical distribution and not normal distribution. When you use empirical, you can set a lower and upper limit. You can also add intermediate points to the function curve creating a similar distribution to normal. You can also calculate it in excel and copy paste the figures into Vissim. You can edit the curve via a graphical interface when double click on the distribution but you also have the option to manually edit the points in the list view on the right side. You just need to set the type to 'empirical' from 'normal' for the distribution you just created.

[@hamedimohsen]

​@@MatyasLemberTutorials thank you. looks like a bug. Based on Min, Q1, median, Q3, and max, I did that.

[@sheikhmohammadismail1417]

How to show the desired speed decision value at road section. In your simulation it is shown 50. How i will do it?

[@MatyasLemberTutorials]

Hey, you need to find desired speed decision on the left part of the screen, click on the little icon next to it, find 'desire speed decision label visibility'. Tick it on, then click on '...' to open the attribute selection dialog window. There select the desired speed distribution attribute (click on the + icon to open available attributes for different vehicle classes). Select the one for the vehicle class you want it to be shown