Note concerning Trailer chains in 1.38

[wdbames2]

I have noticed Traffic packs for 1.38 from more than 1 modder recently that are not working correctly.
Upon investigation, I found that the trailer chains in the def were not updated. the old "truck_semi" no longer works.

SCS has changed the valid trailer chain types.
Here are the new trailer chain types:
bdouble
double
rmdouble
single
tpdouble
triple

I was able to edit the mods to get them working properly.
Modders, please update Your trailer chains as necessary.

[Houssem Manssouri]

plz can u help i had this error as long as i drive it is even causing lag :
<ERROR> [traffic_vehicle_chain] Invalid vehicle type 'truck_semi'!
00:06:58.079 : <ERROR> [traffic_rule] Error initializing traffic rule from data (s_truck_l)
00:06:58.141 : <ERROR> [traffic_vehicle_chain] Invalid vehicle type 'truck_semi'!
00:06:58.141 : <ERROR> [traffic_rule] Error initializing traffic rule from data (s_truck_l)
00:06:58.167 : <ERROR> [traffic_vehicle_chain] Invalid vehicle type 'truck_semi'!
00:06:58.167 : <ERROR> [traffic_rule] Error initializing traffic rule from data (s_truck_l)

ps : i did remove jazzycat pack all of them even 1.38 compatible ones
but ame issues , so i removed none updated truck maybe they had traffic but nothing
i even tried removing the company mod but i still got the error and it dosnt stop
i started to think it is map thing because i have mega ressources + sierra nevada but they are updated!!!
do u have any idea?

[wdbames2]

Those errors are not coming from a map. Look for a traffic mod. SCS changed the names of the connections between trailers/Trucks and trailers.
If You can find the mod that is causing it, look in the def files under vehicles. "truck_semi" needs to be changed to "single". If You see "truck_long" that becomes "double"

[Houssem Manssouri]

the problem is i dnt use any traffic mods and thx for the reply

[BK Vissers]

Is there a table or some other reference as to what the original name was and the replacement? Also is this only for traffic or for actual trailer mods themselves?

[KrysEmlyn]

"traffic_storage_semi_trailer" has been changed to "traffic_storage_trailer_semi" for the single trailers. Use "truck_semi" to reference these trailers.

"traffic_storage_semi_trailer_double" has been changed to "traffic_storage_trailer_long", which has all traffic trailers beyond a single trailer contained here. Use "truck_long" to reference these trailers.

"traffic_storage_trailer_special" has been changed to "traffic_storage_trailer_custom". This one holds the non-driveable trailers that are used for the random events/detours.
When referencing these and other parked trailers in hookup files, use "parked_trailer" instead of "parked_vehicle" and either set the "allow_parked" property to true or exclude this property entirely. (It's true by default when the property is not present)
The property "allowed_vehicle" needs to be changed to "allowed_trailer" for these particular trailers as well.
The property "allowed_vehicle_type" is no longer used (depreciated) by SCS Software.

"traffic_storage_truck" and "traffic_storage_truck_city" remain unchanged as to what their purpose is. The contents inside these files may be different, though.

This information is what I have from unpacking the game's def.scs file.