I assigned a static route to the eastbound (right) direction with a specific flow (I have tried different values as well), but no vehicles are passing through that route! I added two data collection measurement points as shown in the picture to check the count, and it always reads zero vehicles. Any ideas about this issue?
If no vehicles are appearing in VISSIM, there could be a few different issues at play. First, make sure that the simulation is running and that you are viewing the correct network. If the network is correct, check to see if the route file is correctly loaded in the simulation. If the route file is loaded correctly, check to see if the vehicles have been set to the correct start time. If all of these are correct, then the issue could be with the route file or the network itself. In this case, it would be best to contact the VISSIM support team for assistance.
There are several possible causes for this issue.
1. Make sure the route is correctly set up. Check for any missing links, incorrect turn restrictions, or incorrect speeds.
2. Make sure the route is not too long. If it is, vehicles may be getting stuck in a loop, never actually reaching their destination.
3. Make sure the route is not too short. If it is, vehicles may not have enough time to reach their destination.
4. Make sure the route is not too congested. If it is, vehicles may be getting stuck in a traffic jam, never actually reaching their destination.
5. Make sure the route is not too sparse. If it is, vehicles may not have enough traffic to keep them moving.
6. Make sure the route is not too narrow. If it is, vehicles may be getting stuck in a traffic jam, never actually reaching their destination.
7. Make sure the route is not too wide. If it is, vehicles may be driving too fast, leading to accidents and delays.
8. Make sure the route is not too curvy. If it is, vehicles may not be able to maintain their speed, leading to delays.
First, the fact that your east-bound lane is not highlighted by the route is not a problem. Routes do not know about lanes, this is calculated on the fly at simulation start. Normally, the whole link should be highlighted, for some reason the highlighting is too narrow, but that should be a graphics glitch only.
There are several reasons why vehicles would not pick up a static route:
1. They already have a route. You can check during the simulation the vehicles have some attribute for the static route that they use.
2. You use dynamic assignment. Dynamic assignment vehicles completely ignore static routes.
3.The routing decision itself could be picky and, e.g., apply only to specific vehicle classes.
4. Various error conditions; I am not sure what happens if you set the probability of all routes to zero, for example.
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