Introduce separate network modes for heavy vehicles

[tschlenther]

[emerging from #3519]

1. Check and think about the following:
   Heavy-duty vehicles

• usually do not have the same network as car - but ussually one that is restriced more strongly (e.g. excluding some bridges etc.)
• should be explicitly separated from cars. They should (roughly) follow the classes for driving permits ( <3,5 t, <7,5t, <12t, ...). Think about how this works outside Germany....
  2.Further:
• noise and emission calculation depend on the vehicle type and explicitly handle heavy-duty vehicle types. There, we partially work with ID-lookups at the moment (which shall be adressed in a separate issue)
• think about the travel time observer and how he handles the different modes

[rewertvsp]

For the person who starts with this topic: for the new RVR model we introduced a few more network modes for commercial vehicles. Here you can talk to me (@rewertvsp) or the RVR team or check the repo of the matsim scenario metropole ruhr

[kt86]

Yes :)

Re: VehicleType lookup. At least for emissions, we moved away from guessing the type from the Ids, and instead have it set in the vehicleType settings directly ( I have to look up the parameters name...)
I think, we should not go behind this again.

2. Please have in mind, that we then need also to adapt things in the freight contrib, because, as far as I remember, the Routing there is hardcoded on the car network. And we should try to avoid having too many different networks, because then in the end, we are building up travelDisutulity matrixes for the different vehTypes (besides, different time steps,...) & this is in the current implementation, at least for larger VRP instances a time-consuming step...
   -> We should discuss, whether a HGV and a LCV network mode is enough in the first step. <3.5 is a car; then we have the LightCommercialVehicles and the heavy Duty Trucks..

[kainagel]

One question is how we handle weight limits, e.g. for bridges. The "generic" approach would be to generate sub-networks for all possible weight limits. I.e. if the city has weight limits on various bridges of 5t, 10t, 15t, etc., we would need a different sub-network for each weight limit. Anybody has an idea how this works in practice? Are these weight limits always? typically? oriented at the "German" drivers license limits: 3,5t | 7,5t | 12t | 40t (bzw. 41t)? However, I am somewhat confident that I have seen weight limits of 30t at bridges in Berlin. An alternative might be to use some variant of the time-dependent network, and to make forbidden links very expensive before running the router. (Or possibly removing them and inserting them again afterwards.). However, both approaches are a bit dangerous ... we have seen situations where the reset to the original state contained bugs.

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--- This is unfortunately related to the travel time observer (mentioned already in the original post, reinforced by KMT): We would have travel time observers for each sub-network. Another issue, which might be even more important, is that one may not have a sufficient number of observations: E.g. if no truck > 12t traverses the link, the travel time observer will return the free speed travel time, even when the link is congested by other vehicle types. It seems to me that it should be possible to combine this (i.e. have one observer for car, truck3.5t, truck 7.5t, etc., but one needs to think about it a bit.

[kt86]

Anybody has an idea how this works in practice? Are these weight limits always? typically? oriented at the "German" drivers license limits: 3,5t | 7,5t | 12t | 40t (bzw. 41t)? However, I am somewhat confident that I have seen weight limits of 30t at bridges in Berlin.

I think, that it is in many cases related to that limits. But, yes, there are other limits (maybe, because you need other weight limits to still allow PT buses .... I know there was a big discussion about this for the famous line 100 near the Humboldt University..)

[JWJoubert]

For the person who starts with this topic: for the new RVR model we introduced a few more network modes for commercial vehicles. Here you can talk to me (@rewertvsp) or the RVR team or check the repo of the matsim scenario metropole ruhr

@rewertvsp - can you tell me what RVR stands for, and who the RVR team is?

Re: VehicleType lookup. At least for emissions, we moved away from guessing the type from the Ids, and instead have it set in the vehicleType settings directly ( I have to look up the parameters name...)
I think, we should not go behind this again.

I fully agree!!

[rewertvsp]

Oh sorry for using that intern used acronym. RVR is the organization that funded the development of the MATSim ruhr scenario. For the commercial part of this model the contact person is me and for the complete model @GregorRyb