Description:
Jazzycat truck pack is one of the best traffic pack mods, a must have if you like to see more truck models in your game and especially old trucks.
besides personalized sound for all trucks in this pack, I increased the spawn of the old trucks and I adjusted max_speed and torque for some trucks.
according to the game version you are playing you must have the following mods in the following order :
for game version 1.32:
1. Old Trucks Ai Engine Sounds for Jazzycat truck pack 3.1.1 (unpack my archive)
2. Truck Traffic Pack v3.1.1 for 1.32:
for game version 1.31:
1. Old Trucks Ai Engine Sounds for Jazzycat truck pack 1.31 addon
2. Old Trucks Ai Engine Sounds for Jazzycat truck pack 3.1.1
3. Truck Traffic Pack  1.31,
if you want to keep the default spawn by jazzycat you could remove the folder def/country from my base mod
this pack includes few sounds from Drive Safely’s pack Sound Fixes, mostly sound horns for which I offer to him well deserved credits in my mod
changelog v1.1:
corrected error in one file causing no spawn in 1.32

Credits:
Cipinho, Drive Safely, Jazzycat