<Li> yellow with black letters and symbols for warning signs, such as curves and school zones </Li> <Li> orange with black letters for temporary traffic control zones and detours associated with road construction </Li> <Li> purple for "lanes restricted to use only by vehicles with registered electronic toll collection (ETC) accounts", such as EZPass . </Li> <Li> black with white letters or arrows for lane use . </Li>

What signs are diamond shape and predominantly yellow and black