You could also do a lightbar like this like (its a slovenian police car): --- Post updated --- Its like a "thick" version of a led lightbar... if u possibly need more perspective, take a look at these pics:https://sl.gta5-mods.com/paintjobs/slovenian-police-2018-skoda-octavia-skin
The german lightbar is online : https://www.beamng.com/resources/old-german-lighbar-for-the-etk-i.15661/
Yes, but don't worry. I proposed it for all cars in the game, like the Vivace (with the roof flasher in the left) --- Post updated --- What do you think about this idea, @Jakux ?
I'm not sure if you take suggestions, but if you do, could you perhaps make this lighthouse? The SGU-60.