I do not know why did this happen, because there are no trucks or similar traffic file, do not know the mod you use, probably is some incompatibility with some mod anyway so there is no shame in this, just ignorance on their part of the because it is occurring, you should check before you claim to be correct, the only mistake of this mod that I spotted was that I did not withdrew companies (names) that I use in my game and this will be fixed in the next version.