Photon 2 adds emergency vehicle and vehicle lighting functionality to Garry's Mod.
Important
Visit the Photon 2 Wiki to learn more and get started.
While many Garry's Mod addons favor an in-depth folder hierarchy, Photon 2 keeps client/shared/server core logic files within the photon-v2 folder and "classes" in the photon-v2/meta folder. This is primarily done to make file switching easier (Ctrl+P in VSCode), as more generic filenames tend to match others.