The police bike in TBoGT, which I've been playing for years, possess two working internal rotators inside the red/blue generic dome lights.
I'm trying to use the UV-map thing Bxbugs123 used in his ELS-H Police Bike model, but unfortunately it is locked to prevent other modders to modify his work.
The work I done to this police bike is limited. I know there is a similar model which uses the dome lights, but this one is different.
The light configuration has been renewed and is using DRO3 type, just as what I did to Merit cruiser.

Credits:

Western Sovereign LCPD Police Bike
- Model by Rockstar Games
- Overall enhancements and modification done by Naruto 607
- Beacon Lights removal for new type done by Naruto 607
- Siren lights ELS-mapped by Naruto 607
- Emissive textures by Lt.Caine

Federal Signal Beacon CJ-184
- Model and Textures by Solo
- Normal Mapping and glass textures separation done by Naruto 607
- Modified to ELS-IV v8.5 DRO3 variant by Naruto 607
- Emissive textures by Lt.Caine

Whelen TIR6
- Whelen TIR6 Super LED created and ELS mapped by tomcat8492
Credits:
Naruto 607