Not sure if this a style, since the signs came from all over and vary (some are carved wood, painted wood, fabricated painted metal, neon, etc.) which doesn't adhere to a "style" so I guess it's a concept, the idea that your image outcome will be some type of roadside or mounted sign.

Trigger Word: R3n0styl3

example: A photo of a R3n0styl3 [MATERIAL TYPE/VARIETY-painted,neon,etc./CONDITION/] sign that says [TEXT] and is [FEATURES-shapes,characters,objects]

Thanks to @kftiger and @Tiny_Tsuruta for their expertise and inspiration!