Version 1.4.3.2
– Swap light orders on left turn four way gantry system.

Version 1.4.3.1
– Remove support for game version 1.38 and older.
– Fixes and improvements.

Version 1.4.3
– Fix overlapped light signals.
– Update applies to all supported game version.

This mod set longer timing signal to the traffic lights. The traffic light timing modifications are consist of:
26 seconds cross/straight green signal interval.
16 seconds left turn green signal interval.
4 seconds yellow signal interval after the green light.
No yellow signal after the red light.
2 seconds interval between traffic light pattern switching.
Green light for left turn signal comes first (at most traffic lights).

Note: the red signal interval may vary depend on the traffic light pattern complexity.

Supported version
1.42
1.41
1.40
1.39

Disclaimer
This mod should work in official game with any map DLCs. However, it does not provides support for any map mod that comes with their own traffic light objects and custom switching. If you are currently using any map mod, this mod may not work as expected. This mod has no plan to support 3rd party’s map mods.

Credits: madman

extended traffic light timing