v22.12

Fixed the Pierce Arrow XT not having any sound bug (present in the vanilla game). [ATS edition]
Engine sounds added to the Pierce Arrow XT fire truck in AI traffic. [ATS edition]

v21.11

Horn sounds added to the 1979 Mercury Colony Park in AI traffic. [ATS edition]
Fixed recent echo issue for the Grover standalone air horn.

-- Optional addons --
"Previous soundproofing" addon has been adapted for the International 9900i:
https://truckymods.io/d/american-truck-simulator/previous-soundproofing-ats

v21.11 update preparation

v22.10

Engine and horn sounds added to the taxi 2003 Ford Crown Victoria in AI traffic. [ATS edition]
Horn sounds added to the 2003 Lincoln Town Car Stretched Limousine in AI traffic. [ATS edition]
Replaced engine sound samples and adjusted sound mixing for the Mack RD in AI traffic. [ATS edition]
Minor tweak for the 2015 Ford Mustang i4 engine sound mix.

v22.09

Engine and horn sounds added to the 2005 Ford Mustang GT (fifth generation) in AI traffic. [ATS edition]

v22.08

Replaced 2 suspension / tire bump sounds.

v22.07

Reworked one of the generic AI traffic default car sounds.

v22.06

2 new suspension / tire bump sounds added.

v22.05

Engine and horn sounds added to the civilian 2012 Dodge Charger SRT in AI traffic. [ATS edition]
Engine sounds added to the 2016 Ford Transit in AI traffic. [ATS edition]
Minor tweaks to the civilian 2003 Ford Crown Victoria sound mix. [ATS edition]
Improved engine sounds for the Land Rover Range Rover 2010 (L322) in AI traffic.

v22.04.1

Adjusted sound volume for one of the generic AI traffic default car sounds.