DARTZ is from one side historical brand, from other side we can call it as "replica" brand.
As previous factory brands was created from first letters like
Russko (Russian) Baltiysky (Baltic) Vagonniy (Vagon) Zavod (Factory) or
RBVZ at 1869
Car was manufactured under brand: РуссоБалт or RussoBalt in latin transcription.
Brone (Armor) Tanko (Tank) Avtomobilniy (Auto) Zavod (Factory) or
BTAZ at 1922
Car was manufactured under brand: ПРОМБРОНЬ or PROMBRON' in latin transcription.
DARTZ have next meaning:
Division Automobile Riga (factory name in 1907 year documents) Tank (as some cars are armored) Zavod (as You can see that's tradition)
Luxury armored cars are manufactured under brand PROMBRON' (ex.RussoBaltique) or just PROMBRON' - it was last brand of car which was manufactured at 1922 from RussoBalr C24/50 spares, and which was driven by new commy tzars-dictators like Trozky, Kalinin, Lunachasky
DARTZ MOTORZ COMPANY logo is created from Russian railway Logo - as factory start from luxury coaches, mixed with Russian Automobile Squad's logo - as our grandfather was armored RussoBalt, and also wings have meaning as also airplanes was made by RussoBalt JSC.
Orange and black color - The Ribbon of St. George or St. george's ribbon. It;s origins lay back in times of the Russian Empire when RussoBalt Joint STock Venture was born. The first motorised infantery squad on RussoBalt was awarded with Order of St. George, from that time we keep this color.
DARTZ MOTORZ COMPANY manufacture various car models, most famous DARTZ PROMBRON' (ex.RussoBaltique) or just PROMBRON'. Heavy armored cars are named DARTZ KOMBAT.
PROMBRON' by DARTZ logo is compilation or RussoBalt by RBVZ logo and PROMBRON' by BTAZ logo, which traditions continue DARTZ MOTORZ COMPANY.
Here You can see this logos.